This page gives insight into which OBO Foundry ontologies are actively being updated and feedback given to users. It was generated using the GitHub API with scripts at https://github.com/cthoyt/obo-community-health on 2026-10-11. See also the summary of ontology responsible people.
| OBO ID | Name | Contact | Score | GitHub | Stars | Open Issues | OBO Topic | ODK Config | Recently Pushed | Recently Interacted | Last Year Total Contributions | Last Year Unique Contributors | Last Year Top Contributor | Lifetime Total Contributions | Lifetime Unique Contributors | Lifetime Top Contributor | License | Bioregistry | Bioportal | OLS | Messages |
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| ado | Alzheimer's Disease Ontology | @akodamullil | 0 | GitHub π’ | 1 | 7 | No π΄ | π΄ None | 2023-09-21 | 2022-06-20 | 0 | 0 | 31 | 1 | @BideZ (31) | ado | ADO | ado |
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| afpo | African Population Ontology | @Melek-C | 8 | GitHub π’ | 3 | 6 | No π΄ | π’ 1.5.1 | 2026-08-20 | 2026-08-20 | 0 | 0 | 52 | 5 | @anitacaron (36) | afpo | AFPO | afpo |
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| agro | Agronomy Ontology | @marieALaporte | 19 | GitHub π’ | 69 | 38 | Yes π’ | π΄ None | 2025-04-07 | 2026-08-12 | 0 | 0 | 600 | 7 | @celineaubert (292) | cc-by-4.0 | agro | AGRO | agro |
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| aism | Ontology for the Anatomy of the Insect SkeletoMuscular system (AISM) | @JCGiron | 11 | GitHub π’ | 12 | 1 | Yes π’ | π’ 1.6 | 2026-02-14 | 2026-02-14 | 0 | 0 | 197 | 7 | @JCGiron (102) | cc0-1.0 | aism | AISM | aism |
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| amphx | The Amphioxus Development and Anatomy Ontology | @hescriva | 7 | GitHub π’ | 3 | 3 | Yes π’ | π΄ None | 2022-10-07 | 2022-10-07 | 0 | 0 | 13 | 4 | @simonjupp (6) | amphx | AMPHX | amphx |
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| apo | Ascomycete phenotype ontology | @srengel | 19 | GitHub π’ | 4 | 1 | Yes π’ | π΄ None | 2026-09-30 | 2023-03-28 | 0 | 0 | 61 | 5 | @suzialeksander (40) | cc-by-4.0 | apo | APO | apo |
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| apollo_sv | Apollo Structured Vocabulary | @hoganwr | 25 | GitHub π’ | 11 | 11 | Yes π’ | π’ 1.6.1 | 2026-08-15 | 2026-08-15 | 0 | 0 | 285 | 6 | @hoganwr (141) | cc-by-4.0 | apollosv | APOLLO-SV | apollo_sv |
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| aro | Antibiotic Resistance Ontology | @agmcarthur | 20 | GitHub π’ | 22 | 3 | Yes π’ | π΄ None | 2026-10-07 | 2026-10-07 | 0 | 0 | 53 | 3 | @raphenya (40) | cc-by-4.0 | aro | ARO | aro |
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| bco | Biological Collections Ontology | @ramonawalls | 20 | GitHub π’ | 24 | 25 | Yes π’ | π’ 1.2.30 | 2021-11-15 | 2023-11-28 | 0 | 0 | 227 | 4 | @ramonawalls (221) | cc0-1.0 | bco | BCO | bco |
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| bfo | Basic Formal Ontology | @phismith | 22 | GitHub π’ | 345 | 171 | Yes π’ | π΄ None | 2024-01-30 | 2026-10-07 | 0 | 0 | 446 | 11 | @alanruttenberg (235) | cc-by-4.0 | bfo | BFO | bfo |
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| bmont | Biomarker Ontology | @akodamullil | 2 | GitHub π’ | 0 | 1 | No π΄ | π΄ None | 2025-07-31 | 2025-07-01 | 0 | 0 | 13 | 1 | @Astghik-S (13) | bmont | BMONT | bmont |
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| bspo | Biological Spatial Ontology | @cmungall | 21 | GitHub π’ | 14 | 14 | Yes π’ | π’ 1.3.1 | 2026-07-16 | 2026-07-16 | 0 | 0 | 76 | 10 | @cmungall (36) | other | bspo | BSPO | bspo |
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| bto | BRENDA tissue / enzyme source | @chdudek | 17 | GitHub π’ | 7 | 23 | Yes π’ | π’ 1.2.19 | 2023-06-20 | 2024-10-15 | 0 | 0 | 35 | 3 | @BRENDA-Enzymes (24) | cc-by-4.0 | bto | BTO | bto |
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| cdao | Comparative Data Analysis Ontology | @balhoff | 19 | GitHub π’ | 9 | 7 | Yes π’ | π΄ None | 2024-01-25 | 2024-01-30 | 0 | 0 | 79 | 6 | @arlin (31) | cc0-1.0 | cdao | CDAO | cdao |
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| cdno | Compositional Dietary Nutrition Ontology | @LilyAndres | 21 | GitHub π’ | 16 | 23 | Yes π’ | π΄ None | 2026-06-10 | 2026-06-10 | 0 | 0 | 120 | 6 | @kaiiam (105) | cc0-1.0 | cdno | CDNO | cdno |
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| chebi | Chemical Entities of Biological Interest | @amalik01 | 17 | GitHub π’ | 51 | 479 | Yes π’ | π΄ None | 2022-04-20 | 2026-10-09 | 0 | 0 | 3 | 2 | @cthoyt (2) | cc-by-4.0 | chebi | CHEBI | chebi |
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| cheminf | Chemical Information Ontology | @egonw | 27 | GitHub π’ | 23 | 40 | Yes π’ | π’ unknown | 2026-09-21 | 2026-09-30 | 0 | 0 | 215 | 11 | @egonw (68) | cc0-1.0 | cheminf | CHEMINF | cheminf |
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| chiro | CHEBI Integrated Role Ontology | @nicolevasilevsky | 14 | GitHub π’ | 7 | 12 | Yes π’ | π΄ None | 2026-08-24 | 2026-08-24 | 0 | 0 | 65 | 3 | @nicolevasilevsky (38) | other | chiro | CHIRO | chiro |
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| chmo | Chemical Methods Ontology | @batchelorc | 17 | GitHub π’ | 18 | 35 | Yes π’ | π΄ None | 2026-09-30 | 2026-10-01 | 0 | 0 | 111 | 8 | @StroemPhi (45) | cc-by-4.0 | chmo | CHMO | chmo |
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| cido | Coronavirus Infectious Disease Ontology | @yongqunh | 23 | GitHub π’ | 21 | 28 | Yes π’ | π΄ None | 2026-04-14 | 2026-04-06 | 0 | 0 | 356 | 8 | @yongqunh (274) | cc-by-4.0 | cido | CIDO | cido |
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| cio | Confidence Information Ontology | @fbastian | 15 | GitHub π’ | 5 | 0 | Yes π’ | π΄ None | 2025-02-03 | 2026-04-20 | 0 | 0 | 21 | 2 | @fbastian (18) | cc0-1.0 | cio | CIO | cio |
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| cl | Cell Ontology | @dosumis | 29 | GitHub π’ | 214 | 391 | Yes π’ | π’ 1.6.1 | 2026-10-05 | 2026-10-09 | 0 | 0 | 3221 | 49 | @shawntanzk (565) | cc-by-4.0 | cl | CL | cl |
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| clao | Collembola Anatomy Ontology | @luis-gonzalez-m | 16 | GitHub π’ | 3 | 1 | Yes π’ | π΄ None | 2026-06-26 | 2026-02-06 | 0 | 0 | 71 | 2 | @luis-gonzalez-m (70) | cc0-1.0 | clao | CLAO | clao |
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| clo | Cell Line Ontology | @zhengj2007 | 16 | GitHub π’ | 19 | 88 | Yes π’ | π΄ None | 2026-06-20 | 2026-09-24 | 0 | 0 | 178 | 4 | @yongqunh (116) | clo | CLO | clo |
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| clyh | Clytia hemisphaerica Development and Anatomy Ontology | @Leclere-L | 8 | GitHub π’ | 3 | 1 | Yes π’ | π΄ None | 2020-05-29 | 2025-03-19 | 0 | 0 | 26 | 5 | @simonjupp (10) | clyh | CLYH | clyh |
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| cmo | Clinical measurement ontology | @jrsjrs | 10 | GitHub π’ | 3 | 9 | Yes π’ | π΄ None | 2026-09-29 | 2026-09-24 | 0 | 0 | 143 | 3 | @tutajm (140) | cmo | CMO | cmo |
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| cob | Core Ontology for Biology and Biomedicine | @bpeters42 | 24 | GitHub π’ | 53 | 92 | Yes π’ | π’ 1.5.2 | 2026-10-08 | 2026-10-11 | 0 | 0 | 263 | 10 | @cmungall (86) | cc0-1.0 | cob | COB | cob |
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| colao | Coleoptera Anatomy Ontology (COLAO) | @JCGiron | 8 | GitHub π’ | 8 | 1 | Yes π’ | π’ 1.5.1 | 2025-03-11 | 2025-03-11 | 0 | 0 | 59 | 5 | @JCGiron (40) | cc-by-4.0 | colao | COLAO | colao |
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| cro | Contributor Role Ontology | @marijane | 14 | GitHub π’ | 24 | 19 | Yes π’ | π΄ None | 2023-08-16 | 2025-10-13 | 0 | 0 | 332 | 6 | @nicolevasilevsky (272) | cro | CRO | cro |
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| cteno | Ctenophore Ontology | @cmungall | 10 | GitHub π’ | 3 | 2 | Yes π’ | π΄ None | 2016-10-20 | 2021-06-08 | 0 | 0 | 28 | 1 | @cmungall (28) | other | cteno | CTENO | cteno |
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| cto | CTO: Core Ontology of Clinical Trials | @akodamullil | -1 | GitHub π’ | 14 | 17 | Yes π’ | π΄ None | 2024-05-31 | 2025-12-10 | 0 | 0 | 70 | 6 | @linikujp (27) | cto | CTO |
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| cvdo | Cardiovascular Disease Ontology | @pfabry | 15 | GitHub π’ | 7 | 1 | Yes π’ | π΄ None | 2024-06-17 | 2024-07-12 | 0 | 0 | 7 | 3 | @pfabry (4) | cc-by-4.0 | cvdo | CVDO | cvdo |
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| ddanat | Dictyostelium discoideum anatomy | @pfey03 | 10 | GitHub π’ | 1 | 9 | Yes π’ | π΄ None | 2026-03-03 | 2024-08-23 | 0 | 0 | 433 | 8 | @pfey03 (192) | mit | ddanat | DDANAT | ddanat |
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| ddpheno | Dictyostelium discoideum phenotype ontology | @pfey03 | 17 | GitHub π’ | 6 | 5 | Yes π’ | π’ 1.4 | 2023-12-14 | 2024-02-28 | 0 | 0 | 79 | 3 | @pfey03 (46) | cc0-1.0 | ddpheno | DDPHENO | ddpheno |
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| dideo | Drug-drug Interaction and Drug-drug Interaction Evidence Ontology | @mbrochhausen | 16 | GitHub π’ | 16 | 2 | Yes π’ | π΄ None | 2023-10-25 | 2023-10-25 | 0 | 0 | 153 | 6 | @mbrochhausen (93) | cc-by-4.0 | dideo | DIDEO | dideo |
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| disdriv | Disease Drivers Ontology | @lschriml | 17 | GitHub π’ | 4 | 2 | Yes π’ | π΄ None | 2026-03-31 | 2026-04-01 | 0 | 0 | 46 | 2 | @allenbaron (24) | cc0-1.0 | disdriv | DISDRIV | disdriv |
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| doid | Human Disease Ontology | @lschriml | 30 | GitHub π’ | 416 | 85 | Yes π’ | π΄ None | 2026-10-09 | 2026-10-10 | 0 | 0 | 3837 | 17 | @allenbaron (1052) | cc0-1.0 | doid | DOID | doid |
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| dpo | Drosophila Phenotype Ontology | @Clare72 | 24 | GitHub π’ | 5 | 23 | Yes π’ | π’ 1.6.1 | 2026-10-01 | 2026-10-01 | 0 | 0 | 400 | 4 | @Clare72 (284) | cc-by-4.0 | fbcv | FB-CV | fbcv |
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| dron | The Drug Ontology | @hoganwr | 21 | GitHub π’ | 10 | 2 | Yes π’ | π΄ None | 2026-09-20 | 2026-09-20 | 0 | 0 | 245 | 5 | @hoganwr (148) | cc-by-4.0 | dron | DRON | dron |
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| duo | Data Use Ontology | @mcourtot | 15 | GitHub π’ | 72 | 56 | Yes π’ | π΄ None | 2022-09-21 | 2026-08-26 | 0 | 0 | 187 | 15 | @mcourtot (135) | other | duo | DUO | duo |
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| ecao | The Echinoderm Anatomy and Development Ontology | @ettensohn | 11 | GitHub π’ | 2 | 0 | Yes π’ | π’ 1.2.22 | 2025-05-15 | 2023-03-03 | 0 | 0 | 24 | 3 | @pellst (17) | ecao | ECAO | ecao |
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| eco | Evidence and Conclusion Ontology | @mgiglio99 | 21 | GitHub π’ | 55 | 25 | Yes π’ | π΄ None | 2026-07-10 | 2026-10-10 | 0 | 0 | 416 | 11 | @nsuvarnaiari (187) | cc0-1.0 | eco | ECO | eco |
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| ecocore | An ontology of core ecological entities | @pbuttigieg | 17 | GitHub π’ | 18 | 21 | Yes π’ | π’ 1.6.1 | 2026-10-08 | 2026-10-08 | 0 | 0 | 177 | 10 | @diatomsRcool (110) | ecocore | ECOCORE | ecocore |
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| ecto | Environmental conditions, treatments and exposures ontology | @diatomsRcool | 24 | GitHub π’ | 40 | 83 | Yes π’ | π’ 1.6.1 | 2026-09-03 | 2026-09-11 | 0 | 0 | 550 | 11 | @laurenechan (190) | other | ecto | ECTO | ecto |
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| emapa | Mouse Developmental Anatomy Ontology | @tfhayamizu | 18 | GitHub π’ | 5 | 57 | Yes π’ | π΄ None | 2026-10-02 | 2026-04-24 | 0 | 0 | 568 | 9 | @tfhayamizu (339) | other | emapa | EMAPA | emapa |
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| emro | Emotion Response Ontology | @wdduncan | 16 | GitHub π’ | 2 | 2 | No π΄ | π’ 1.3.1 | 2026-09-28 | 2026-09-28 | 0 | 0 | 141 | 3 | @wdduncan (123) | cc0-1.0 | emro | EMRO | emro |
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| envo | Environment Ontology | @pbuttigieg | 28 | GitHub π’ | 171 | 555 | Yes π’ | π΄ None | 2026-06-29 | 2026-10-07 | 0 | 0 | 1836 | 30 | @pbuttigieg (791) | cc0-1.0 | envo | ENVO | envo |
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| epio | Epilepsy Ontology | @akodamullil | -3 | GitHub π’ | 3 | 1 | No π΄ | π΄ None | 2023-01-04 | 2023-02-20 | 0 | 0 | 16 | 2 | @phwegner (12) | mit | epio | EPIO |
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| exmo | Exercise Medicine Ontology | @DarkKnight0-0 | 5 | GitHub π’ | 2 | 1 | No π΄ | π΄ None | 2026-06-02 | 2026-03-25 | 0 | 0 | 18 | 2 | @DarkKnight0-0 (15) | exmo | EXMO | exmo |
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| exo | Exposure ontology | @diatomsRcool | 17 | GitHub π’ | 3 | 4 | Yes π’ | π΄ None | 2025-09-04 | 2025-09-04 | 0 | 0 | 63 | 7 | @cjgrondin (20) | cc-by-4.0 | exo | EXO | exo |
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| fao | Fungal gross anatomy | @ValWood | 18 | GitHub π’ | 12 | 8 | Yes π’ | π΄ None | 2025-07-15 | 2025-12-30 | 0 | 0 | 32 | 4 | @cmungall (29) | cc0-1.0 | fao | FAO | fao |
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| fbbi | Biological Imaging Methods Ontology | @gouttegd | 18 | GitHub π’ | 14 | 22 | No π΄ | π’ 1.6.1 | 2026-10-09 | 2026-10-09 | 0 | 0 | 114 | 4 | @gouttegd (71) | cc-by-4.0 | fbbi | FBbi | fbbi |
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| fbbt | Drosophila gross anatomy | @Clare72 | 29 | GitHub π’ | 23 | 17 | Yes π’ | π’ 1.6.1 | 2026-10-10 | 2026-10-10 | 0 | 0 | 6767 | 8 | @Clare72 (5737) | cc-by-4.0 | fbbt | FB-BT | fbbt |
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| fbcv | FlyBase Controlled Vocabulary | @Clare72 | 26 | GitHub π’ | 10 | 0 | Yes π’ | π’ 1.6.1 | 2026-10-01 | 2026-10-01 | 0 | 0 | 403 | 6 | @Clare72 (199) | cc-by-4.0 | fbcv | FB-CV | fbcv |
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| fbdv | Drosophila development | @Clare72 | 23 | GitHub π’ | 5 | 0 | Yes π’ | π’ 1.6.1 | 2026-09-30 | 2026-09-30 | 0 | 0 | 209 | 3 | @Clare72 (151) | cc-by-4.0 | fbdv | FB-DV | fbdv |
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| fideo | Food Interactions with Drugs Evidence Ontology | @getbordea | 9 | No π΄ | 0 | 0 | No π΄ | π΄ None | 0 | 0 | 0 | 0 | fideo | FIDEO | fideo |
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| flopo | Flora Phenotype Ontology | @leechuck | 14 | GitHub π’ | 12 | 2 | Yes π’ | π΄ None | 2026-10-05 | 2026-10-05 | 0 | 0 | 97 | 3 | @leechuck (82) | bsd-3-clause | flopo | FLOPO | flopo |
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| fobi | Food-Biomarker Ontology | @pcastellanoescuder | 14 | GitHub π’ | 19 | 2 | Yes π’ | π΄ None | 2022-05-03 | 2022-05-03 | 0 | 0 | 74 | 3 | @pcastellanoescuder (71) | cc-by-4.0 | fobi | FOBI | fobi |
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| foodon | Food Ontology | @ddooley | 32 | GitHub π’ | 242 | 78 | Yes π’ | π’ 1.6.1 | 2026-09-20 | 2026-08-07 | 0 | 0 | 1164 | 10 | @ddooley (642) | cc-by-4.0 | foodon | FOODON | foodon |
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| fovt | FuTRES Ontology of Vertebrate Traits | @megbalk | 25 | GitHub π’ | 3 | 38 | Yes π’ | π’ 1.4.1 | 2026-08-17 | 2026-07-27 | 0 | 0 | 699 | 10 | @meghalithic (570) | cc0-1.0 | fovt | FOVT | fovt |
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| fypo | Fission Yeast Phenotype Ontology | @ValWood | 24 | GitHub π’ | 17 | 177 | Yes π’ | π’ 1.6 | 2026-09-29 | 2026-10-08 | 0 | 0 | cc-by-4.0 | fypo | FYPO | fypo |
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| gallont | Plant Gall Ontology | @adeans | 9 | GitHub π’ | 3 | 9 | No π΄ | π’ 1.5 | 2024-09-09 | 2026-08-31 | 0 | 0 | 85 | 1 | @adeans (85) | cc0-1.0 | gallont | GALLONT | gallont |
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| gaz | Gazetteer | @lschriml | 9 | GitHub π’ | 9 | 37 | Yes π’ | π΄ None | 2026-01-15 | 2026-01-15 | 0 | 0 | 16 | 4 | @lschriml (10) | other | gaz | GAZ | gaz |
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| gecko | Genomics Cohorts Knowledge Ontology | @beckyjackson | 8 | GitHub π’ | 7 | 10 | Yes π’ | π΄ None | 2021-01-20 | 2022-05-24 | 0 | 0 | 25 | 4 | @snazzy-shrimp (17) | other | gecko | GECKO | gecko |
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| genepio | Genomic Epidemiology Ontology | @ddooley | 23 | GitHub π’ | 25 | 76 | Yes π’ | π’ 1.6.1 | 2026-07-11 | 2026-07-30 | 0 | 0 | 504 | 5 | @cmrn-rhi (356) | other | genepio | GENEPIO | genepio |
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| geno | Genotype Ontology | @mbrush | 21 | GitHub π’ | 20 | 42 | Yes π’ | π’ unknown | 2026-10-03 | 2026-10-03 | 0 | 0 | 218 | 5 | @mbrush (182) | geno | GENO | geno |
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| geo | Geographical Entity Ontology | @hoganwr | 14 | GitHub π’ | 13 | 12 | No π΄ | π΄ None | 2025-02-19 | 2025-07-02 | 0 | 0 | 100 | 5 | @hoganwr (74) | cc-by-4.0 | geogeo | GEO | geo |
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| gno | Glycan Naming and Subsumption Ontology (GNOme) | @edwardsnj | 21 | GitHub π’ | 9 | 0 | Yes π’ | π΄ None | 2026-07-24 | 2026-07-24 | 0 | 0 | 420 | 3 | @edwardsnj (231) | cc-by-4.0 | gno | GNO | gno |
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| go | Gene Ontology | @suzialeksander | 32 | GitHub π’ | 254 | 722 | Yes π’ | π΄ None | 2026-10-10 | 2026-10-10 | 3164 | 44 | @pgaudet (847) | 26934 | 44 | @pgaudet (12598) | cc-by-4.0 | go | GO | go |
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| gsso | Gender, Sex, and Sexual Orientation (GSSO) ontology | @Superraptor | 5 | GitHub π’ | 59 | 2 | Yes π’ | π΄ None | 2024-06-13 | 2025-06-15 | 0 | 0 | 198 | 2 | @Superraptor (196) | apache-2.0 | gsso | GSSO | gsso |
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| hancestro | Human Ancestry Ontology | @daniwelter | 24 | GitHub π’ | 7 | 10 | Yes π’ | π’ 1.5.4 | 2025-10-14 | 2026-08-19 | 0 | 0 | 188 | 6 | @daniwelter (147) | cc-by-4.0 | hancestro | HANCESTRO | hancestro |
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| hao | Hymenoptera Anatomy Ontology | @mjy | 11 | GitHub π’ | 7 | 4 | Yes π’ | π΄ None | 2023-06-01 | 2026-02-17 | 0 | 0 | 20 | 4 | @balhoff (14) | cc0-1.0 | hao | HAO | hao |
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| hom | Homology Ontology | @fbastian | 11 | GitHub π’ | 0 | 3 | Yes π’ | π΄ None | 2025-02-03 | 2026-04-20 | 0 | 0 | 9 | 2 | @fbastian (7) | cc0-1.0 | hom | HOM | hom |
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| hp | Human Phenotype Ontology (HPO) | @drseb | 26 | GitHub π’ | 376 | 194 | Yes π’ | π’ 1.6 | 2026-09-03 | 2026-10-09 | 0 | 0 | 5179 | 26 | @pnrobinson (1884) | other | hp | HP | hp |
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| hsapdv | Human Developmental Stages | @fbastian | 23 | GitHub π’ | 14 | 63 | Yes π’ | π’ 1.5.4 | 2026-06-10 | 2026-08-10 | 0 | 0 | 418 | 10 | @ANiknejad (156) | hsapdv | HSAPDV | hsapdv |
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| hso | Health Surveillance Ontology | @nandadorea | 13 | GitHub π’ | 4 | 0 | Yes π’ | π΄ None | 2021-12-13 | 2021-12-13 | 0 | 0 | 217 | 1 | @nandadorea (217) | hso | HSO | hso |
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| htn | Hypertension Ontology | @aellenhicks | 2 | GitHub π’ | 1 | 12 | No π΄ | π΄ None | 2022-04-19 | 2023-03-03 | 0 | 0 | 7 | 2 | @aellenhicks (6) | cc-by-4.0 | htn | HTN | htn |
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| iao | Information Artifact Ontology | @zhengj2007 | 26 | GitHub π’ | 115 | 142 | Yes π’ | π΄ None | 2026-04-10 | 2026-05-07 | 0 | 0 | 486 | 14 | @alanruttenberg (215) | cc-by-4.0 | iao | IAO | iao |
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| iceo | Integrative and Conjugative Element Ontology | @Lemon-Liu | 13 | GitHub π’ | 4 | 0 | Yes π’ | π΄ None | 2022-10-24 | 2022-01-26 | 0 | 0 | 94 | 4 | @Lemon-Liu (91) | other | iceo | ICEO | iceo |
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| ico | Informed Consent Ontology | @yongqunh | 17 | GitHub π’ | 10 | 22 | Yes π’ | π΄ None | 2026-06-26 | 2026-02-28 | 0 | 0 | 139 | 8 | @CooperStansbury (54) | other | ico | ICO | ico |
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| ido | Infectious Disease Ontology | @lgcowell | 6 | GitHub π’ | 6 | 12 | Yes π’ | π΄ None | 2020-05-13 | 2024-04-12 | 0 | 0 | 4 | 1 | @lgcowell (4) | ido | IDO | ido |
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| ino | Interaction Network Ontology | @yongqunh | 10 | GitHub π’ | 3 | 1 | Yes π’ | π΄ None | 2023-03-05 | 2026-01-15 | 0 | 0 | 23 | 1 | @yongqunh (23) | ino | INO | ino |
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| kisao | Kinetic Simulation Algorithm Ontology | @jonrkarr | 5 | GitHub π’ | 12 | 8 | No π΄ | π΄ None | 2026-03-31 | 2026-05-29 | 0 | 0 | 213 | 4 | @jonrkarr (86) | artistic-2.0 | biomodels.kisao | KISAO | kisao |
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| labo | clinical LABoratory Ontology | @pfabry | 14 | GitHub π’ | 2 | 0 | Yes π’ | π΄ None | 2023-03-06 | 2023-03-21 | 0 | 0 | 23 | 1 | @pfabry (23) | cc-by-4.0 | labo | LABO | labo |
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| lepao | Lepidoptera Anatomy Ontology | @luis-gonzalez-m | 19 | GitHub π’ | 1 | 0 | Yes π’ | π’ 1.4 | 2023-02-18 | 2023-02-18 | 0 | 0 | 42 | 3 | @luis-gonzalez-m (35) | cc-by-4.0 | lepao | LEPAO | lepao |
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| ma | Mouse adult gross anatomy | @tfhayamizu | 12 | GitHub π’ | 0 | 0 | No π΄ | π’ 1.6 | 2026-02-24 | 0 | 0 | 23 | 3 | @matentzn (12) | ma | MA | ma |
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| maxo | Medical Action Ontology | @LCCarmody | 22 | GitHub π’ | 66 | 28 | Yes π’ | π’ 1.6 | 2026-10-10 | 2026-10-10 | 0 | 0 | cc-by-4.0 | maxo | MAXO | maxo |
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| mco | Microbial Conditions Ontology | @citmejia | 7 | GitHub π’ | 7 | 2 | No π΄ | π΄ None | 2022-07-01 | 2023-03-03 | 0 | 0 | 47 | 4 | @citmejia (36) | mco | MCO | mco |
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| mcro | Model Card Report Ontology | @ProfTuan | 11 | GitHub π’ | 5 | 0 | No π΄ | π΄ None | 2025-12-02 | 0 | 0 | 44 | 1 | @ProfTuan (44) | cc-by-4.0 | mcro | MCRO | mcro |
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| mf | Mental Functioning Ontology | @jannahastings | 17 | GitHub π’ | 37 | 2 | Yes π’ | π΄ None | 2026-02-06 | 2026-08-21 | 0 | 0 | 97 | 5 | @jannahastings (84) | other | mf | MF | mf |
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| mfoem | Emotion Ontology | @jannahastings | 16 | GitHub π’ | 71 | 2 | Yes π’ | π΄ None | 2025-10-17 | 2026-08-21 | 0 | 0 | 79 | 2 | @jannahastings (70) | mfoem | MFOEM | mfoem |
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| mfomd | Mental Disease Ontology | @jannahastings | 17 | GitHub π’ | 37 | 2 | Yes π’ | π΄ None | 2026-02-06 | 2026-08-21 | 1 | 5 | @mayabraun (1) | 97 | 5 | @jannahastings (84) | other | mfomd | MFOMD | mfomd |
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| mi | Molecular Interactions Controlled Vocabulary | @luanalicata | 11 | GitHub π’ | 5 | 14 | No π΄ | π΄ None | 2026-09-11 | 2026-09-11 | 0 | 0 | 249 | 9 | @pporrasebi (105) | cc-by-4.0 | mi | MI | mi |
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| miapa | MIAPA Ontology | @hlapp | 19 | GitHub π’ | 9 | 17 | Yes π’ | π΄ None | 2022-04-25 | 2022-10-31 | 0 | 0 | 43 | 8 | @hlapp (31) | cc0-1.0 | miapa | MIAPA | miapa |
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| mmo | Measurement method ontology | @jrsjrs | 9 | GitHub π’ | 1 | 1 | Yes π’ | π΄ None | 2026-09-29 | 2023-03-07 | 0 | 0 | 142 | 3 | @tutajm (139) | mmo | MMO | mmo |
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| mmusdv | Mouse Developmental Stages | @fbastian | 23 | GitHub π’ | 14 | 63 | Yes π’ | π’ 1.5.4 | 2026-06-10 | 2026-08-10 | 0 | 0 | 418 | 10 | @ANiknejad (156) | mmusdv | MMUSDV | mmusdv |
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| mod | Protein modification | @pabinz | 19 | GitHub π’ | 16 | 24 | Yes π’ | π΄ None | 2026-09-18 | 2026-09-18 | 0 | 0 | 222 | 17 | @pmt706 (123) | cc-by-4.0 | mod | PSIMOD | mod |
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| mondo | Mondo Disease Ontology | @sabrinatoro | 32 | GitHub π’ | 326 | 532 | Yes π’ | π΄ None | 2026-10-09 | 2026-10-09 | 825 | 53 | @sabrinatoro (208) | 16174 | 53 | @nicolevasilevsky (8058) | cc-by-4.0 | mondo | MONDO | mondo |
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| mop | Molecular Process Ontology | @batchelorc | 19 | GitHub π’ | 49 | 21 | Yes π’ | π΄ None | 2026-10-07 | 2026-10-09 | 0 | 0 | 149 | 7 | @batchelorc (70) | cc-by-4.0 | mop | MOP | mop |
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| mp | Mammalian Phenotype Ontology | @sbello | 29 | GitHub π’ | 21 | 259 | Yes π’ | π’ 1.6 | 2026-10-01 | 2026-10-01 | 0 | 0 | 2293 | 12 | @sbello (1099) | cc-by-4.0 | mp | MP | mp |
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| mpath | Mouse pathology ontology | @PaulNSchofield | 8 | GitHub π’ | 0 | 2 | Yes π’ | π΄ None | 2023-09-30 | 2023-09-30 | 0 | 0 | 8 | 4 | @PaulNSchofield (4) | mpath | MPATH | mpath |
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| mpio | Minimum PDDI Information Ontology | @mbrochhausen | 10 | GitHub π’ | 1 | 1 | Yes π’ | π΄ None | 2023-10-17 | 2023-03-21 | 0 | 0 | 77 | 4 | @mbrochhausen (72) | cc-by-4.0 | mpio | MPIO | mpio |
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| mro | MHC Restriction Ontology | @bpeters42 | 11 | GitHub π’ | 14 | 20 | Yes π’ | π΄ None | 2026-09-15 | 2026-07-13 | 0 | 0 | 272 | 5 | @jamesaoverton (200) | mro | mro |
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| ms | Mass spectrometry ontology | @mobiusklein | 22 | GitHub π’ | 42 | 18 | Yes π’ | π΄ None | 2026-10-10 | 2026-10-10 | 0 | 0 | 888 | 42 | @mobiusklein (424) | other | ms | MS | ms |
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| nbo | Neuro Behavior Ontology | @gkoutos | 18 | GitHub π’ | 28 | 22 | Yes π’ | π’ 1.4 | 2026-01-14 | 2026-01-14 | 0 | 0 | 199 | 14 | @matentzn (96) | nbo | NBO | nbo |
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| ncbitaxon | NCBI organismal classification | @fbastian | 18 | GitHub π’ | 31 | 28 | Yes π’ | π΄ None | 2026-07-12 | 2026-09-28 | 0 | 0 | 148 | 16 | @matentzn (56) | bsd-3-clause | ncbitaxon | NCBITAXON | ncbitaxon |
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| ncit | NCI Thesaurus OBO Edition | @ghost | 0 | GitHub π’ | 3 | 1 | No π΄ | π΄ None | 2026-07-11 | 2026-03-20 | 0 | 0 | 15 | 2 | @ncit-obo (13) | ncit | NCIT | ncit |
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| ncro | Non-Coding RNA Ontology | @Huang-OMIT | 13 | GitHub π’ | 7 | 23 | Yes π’ | π΄ None | 2023-03-23 | 2023-03-23 | 0 | 0 | 76 | 4 | @alanruttenberg (60) | cc-by-4.0 | ncro | NCRO | ncro |
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| ngbo | Next Generation Biobanking Ontology | @dalalghamdi | 5 | GitHub π’ | 3 | 0 | No π΄ | π΄ None | 2024-09-04 | 2022-06-17 | 0 | 0 | 85 | 1 | @Dalalghamdi (85) | other | ngbo | NGBO | ngbo |
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| nomen | NOMEN - A nomenclatural ontology for biological names | @mjy | -6 | GitHub π’ | 14 | 11 | Yes π’ | π΄ None | 2025-10-13 | 2023-10-27 | 0 | 0 | 80 | 4 | @proceps (58) | unlicense | nomen | NOMEN | nomen |
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| oae | Ontology of Adverse Events | @yongqunh | 14 | GitHub π’ | 6 | 8 | Yes π’ | π΄ None | 2026-04-15 | 2026-04-15 | 0 | 0 | 63 | 4 | @yongqunh (50) | oae | OAE | oae |
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| oarcs | Ontology of Arthropod Circulatory Systems | @mjy | 10 | GitHub π’ | 1 | 6 | Yes π’ | π΄ None | 2019-04-18 | 2023-01-04 | 0 | 0 | 11 | 3 | @mjy (9) | other | oarcs | OARCS | oarcs |
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| oba | Ontology of Biological Attributes | @cmungall | 25 | GitHub π’ | 32 | 100 | Yes π’ | π’ 1.6 | 2026-10-10 | 2026-10-09 | 0 | 0 | cc0-1.0 | oba | OBA | oba |
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| obcs | Ontology of Biological and Clinical Statistics | @zhengj2007 | 7 | GitHub π’ | 3 | 5 | Yes π’ | π΄ None | 2024-02-27 | 2025-07-01 | 0 | 0 | 54 | 4 | @yongqunh (28) | obcs | OBCS | obcs |
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| obi | Ontology for Biomedical Investigations | @bpeters42 | 23 | GitHub π’ | 111 | 248 | Yes π’ | π΄ None | 2026-09-21 | 2026-10-08 | 0 | 0 | 909 | 25 | @jamesaoverton (344) | cc-by-4.0 | obi | OBI | obi |
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| obib | Ontology for Biobanking | @jmwhorton | 16 | GitHub π’ | 16 | 17 | Yes π’ | π΄ None | 2025-06-11 | 2025-06-11 | 0 | 0 | 175 | 7 | @cstoeckert (68) | other | obib | OBIB | obib |
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| occo | Occupation Ontology | @zhengj2007 | 11 | GitHub π’ | 16 | 27 | No π΄ | π΄ None | 2026-08-13 | 2026-08-13 | 0 | 0 | 147 | 5 | @zhengj2007 (51) | occo | OCCO | occo |
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| ogg | The Ontology of Genes and Genomes | @yongqunh | 11 | No π΄ | 0 | 0 | No π΄ | π΄ None | 0 | 0 | 0 | 0 | ogg | OGG |
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| ogms | Ontology for General Medical Science | @BAevermann | 17 | GitHub π’ | 29 | 67 | Yes π’ | π’ 1.6 | 2026-06-10 | 2026-09-14 | 0 | 0 | 56 | 8 | @awqbi (19) | other | ogms | OGMS | ogms |
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| ohd | Oral Health and Disease Ontology | @wdduncan | 28 | GitHub π’ | 15 | 58 | Yes π’ | π’ 1.5.2 | 2026-10-06 | 2026-10-01 | 0 | 0 | 1339 | 12 | @wdduncan (900) | cc-by-4.0 | ohd | OHD | ohd |
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| ohmi | Ontology of Host-Microbiome Interactions | @yongqunh | 20 | GitHub π’ | 12 | 9 | Yes π’ | π΄ None | 2026-05-14 | 2026-05-14 | 0 | 0 | 155 | 4 | @yongqunh (116) | cc-by-4.0 | ohmi | OHMI | ohmi |
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| ohpi | Ontology of Host Pathogen Interactions | @e4ong1031 | 10 | GitHub π’ | 0 | 1 | Yes π’ | π΄ None | 2026-06-13 | 2023-03-20 | 0 | 0 | 94 | 2 | @e4ong1031 (73) | ohpi | OHPI | ohpi |
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| omit | Ontology for MIRNA Target | @Huang-OMIT | 9 | GitHub π’ | 4 | 9 | Yes π’ | π΄ None | 2017-05-08 | 2023-10-04 | 0 | 0 | 53 | 4 | @harrisonstrachan (42) | omit | OMIT | omit |
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| omo | OBO Metadata Ontology | @cmungall | 27 | GitHub π’ | 27 | 90 | Yes π’ | π’ 1.6.1 | 2026-09-25 | 2026-09-25 | 0 | 0 | 178 | 13 | @matentzn (73) | cc0-1.0 | omo | OMO | omo |
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| omp | Ontology of Microbial Phenotypes | @jimhu-tamu | 6 | GitHub π’ | 8 | 115 | No π΄ | π΄ None | 2024-03-25 | 2023-12-12 | 0 | 0 | 528 | 7 | @dsiegele (390) | omp | OMP | omp |
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| omrse | Ontology for Modeling and Representation of Social Entities | @hoganwr | 28 | GitHub π’ | 22 | 7 | Yes π’ | π’ 1.6.1 | 2026-09-04 | 2026-10-07 | 0 | 0 | 330 | 14 | @hoganwr (164) | cc-by-4.0 | omrse | OMRSE | omrse |
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| ons | Ontology for Nutritional Studies | @FrancescoVit | 21 | GitHub π’ | 13 | 6 | Yes π’ | π΄ None | 2026-02-19 | 2026-02-19 | 0 | 0 | 291 | 5 | @FrancescoVit (248) | cc-by-4.0 | ons | ONS | ons |
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| ontoavida | OntoAvida: ontology for Avida digital evolution platform | @miguelfortuna | -1 | No π΄ | 0 | 0 | No π΄ | π΄ None | 0 | 0 | 0 | 0 | ontoavida | ONTOAVIDA | ontoavida |
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| ontoneo | Obstetric and Neonatal Ontology | @FernandaFarinelli | 12 | GitHub π’ | 5 | 6 | Yes π’ | π΄ None | 2025-03-16 | 2025-11-03 | 0 | 0 | 83 | 1 | @FernandaFarinelli (83) | cc0-1.0 | ontoneo | ONTONEO | ontoneo |
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| oostt | Ontology of Organizational Structures of Trauma centers and Trauma systems | @mbrochhausen | 18 | GitHub π’ | 7 | 39 | Yes π’ | π΄ None | 2026-09-10 | 2026-09-10 | 0 | 0 | 1049 | 8 | @mbrochhausen (821) | cc-by-4.0 | oostt | OOSTT | oostt |
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| opl | Ontology for Parasite LifeCycle | @zhengj2007 | 16 | GitHub π’ | 3 | 1 | Yes π’ | π΄ None | 2024-07-25 | 2025-02-24 | 0 | 0 | 49 | 4 | @zhengj2007 (45) | cc-by-4.0 | opl | OPL | opl |
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| opmi | Ontology of Precision Medicine and Investigation | @yongqunh | 20 | GitHub π’ | 7 | 14 | Yes π’ | π΄ None | 2026-10-06 | 2026-10-05 | 0 | 0 | 186 | 6 | @yongqunh (164) | cc-by-4.0 | opmi | OPMI | opmi |
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| ornaseq | Ontology of RNA Sequencing | @safisher | 12 | GitHub π’ | 3 | 2 | Yes π’ | π΄ None | 2022-10-27 | 2022-10-27 | 0 | 0 | 2 | 2 | @cthoyt (1) | cc-by-4.0 | ornaseq | ORNASEQ | ornaseq |
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| ovae | Ontology of Vaccine Adverse Events | @yongqunh | 13 | GitHub π’ | 3 | 1 | Yes π’ | π΄ None | 2023-03-05 | 2023-03-05 | 0 | 0 | 8 | 1 | @yongqunh (8) | cc0-1.0 | ovae | OVAE | ovae |
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| pain | The Pain Ontology | @wdduncan | 15 | GitHub π’ | 3 | 3 | No π΄ | π’ 1.3.1 | 2026-10-01 | 2026-10-01 | 0 | 0 | 220 | 1 | @wdduncan (220) | cc-by-4.0 | pain | PAIN | pain |
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| pato | Phenotype And Trait Ontology | @gkoutos | 22 | GitHub π’ | 60 | 145 | Yes π’ | π’ 1.6.1 | 2026-10-09 | 2026-10-09 | 0 | 0 | 589 | 32 | @shawntanzk (143) | bsd-3-clause | pato | PATO | pato |
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| pbpko | Physiologically-Based Pharmacokinetic Ontology | @Crispae | 13 | GitHub π’ | 12 | 25 | No π΄ | π’ 1.6 | 2026-07-15 | 2026-09-06 | 0 | 0 | 81 | 7 | @Crispae (57) | other | pbpko | PBPKO | pbpko |
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| pcl | Provisional Cell Ontology | @dosumis | 24 | GitHub π’ | 12 | 19 | Yes π’ | π’ 1.4.3 | 2025-07-08 | 2025-07-08 | 0 | 0 | 106 | 6 | @shawntanzk (64) | cc-by-4.0 | pcl | PCL | pcl |
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| pco | Population and Community Ontology | @ramonawalls | 20 | GitHub π’ | 19 | 30 | Yes π’ | π’ 1.2.21 | 2022-10-27 | 2022-10-27 | 0 | 0 | 197 | 6 | @ramonawalls (188) | cc0-1.0 | pco | PCO | pco |
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| pdro | The Prescription of Drugs Ontology | @pfabry | 17 | GitHub π’ | 6 | 0 | Yes π’ | π΄ None | 2026-06-09 | 2026-06-09 | 0 | 0 | 26 | 3 | @rtaseen (15) | cc-by-4.0 | pdro | PDRO | pdro |
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| peco | Plant Experimental Conditions Ontology | @jaiswalp | 17 | GitHub π’ | 13 | 7 | Yes π’ | π΄ None | 2026-03-05 | 2025-12-10 | 0 | 0 | 278 | 8 | @cooperl09 (130) | cc-by-4.0 | peco | PECO | peco |
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| phipo | Pathogen Host Interaction Phenotype Ontology | @CuzickA | 18 | GitHub π’ | 5 | 40 | Yes π’ | π’ 1.6 | 2026-08-06 | 2026-10-06 | 0 | 0 | 1211 | 8 | @CuzickA (889) | other | phipo | PHIPO | phipo |
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| plana | planaria-ontology | @srobb1 | 22 | GitHub π’ | 7 | 10 | Yes π’ | π’ 1.4 | 2026-09-08 | 2026-09-08 | 0 | 0 | 692 | 9 | @srobb1 (307) | plana | PLANA | plana |
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| planp | Planarian Phenotype Ontology | @srobb1 | 16 | GitHub π’ | 6 | 5 | Yes π’ | π’ 1.2.20 | 2023-02-19 | 2023-02-19 | 0 | 0 | 87 | 2 | @srobb1 (81) | planp | PLANP | planp |
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| po | Plant Ontology | @jaiswalp | 22 | GitHub π’ | 75 | 110 | Yes π’ | π΄ None | 2026-04-24 | 2026-09-18 | 0 | 0 | 1233 | 13 | @cooperl09 (532) | cc-by-4.0 | po | PO | po |
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| poro | Porifera Ontology | @bobthacker | 15 | GitHub π’ | 7 | 12 | Yes π’ | π’ 1.6.1 | 2026-08-31 | 2026-09-02 | 0 | 0 | 113 | 4 | @cmungall (95) | poro | PORO | poro |
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| ppo | Plant Phenology Ontology | @ramonawalls | 14 | GitHub π’ | 19 | 8 | Yes π’ | π΄ None | 2026-05-06 | 2026-05-26 | 0 | 0 | 543 | 6 | @stuckyb (326) | ppo | PPO | ppo |
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| pr | PRotein Ontology (PRO) | @nataled | 15 | GitHub π’ | 16 | 44 | Yes π’ | π΄ None | 2026-10-05 | 2026-10-05 | 0 | 0 | 69 | 4 | @dependabot[bot] (45) | other | pr | PR | pr |
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| prefer | Precision Fermentation Ontology | @txellext | 17 | GitHub π’ | 6 | 31 | No π΄ | π’ 1.6 | 2026-09-09 | 2026-10-06 | 0 | 0 | 385 | 4 | @txellext (243) | cc-by-4.0 | prefer | PREFER | prefer |
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| proco | Process Chemistry Ontology | @schaferw | 4 | GitHub π’ | 11 | 27 | No π΄ | π΄ None | 2022-12-12 | 2025-02-05 | 0 | 0 | 46 | 4 | @yongqunh (35) | proco | PROCO | proco |
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| psdo | Performance Summary Display Ontology | @zachll | 11 | GitHub π’ | 4 | 2 | Yes π’ | π΄ None | 2026-04-16 | 2026-04-23 | 0 | 0 | 93 | 7 | @CooperStansbury (37) | other | psdo | PSDO | psdo |
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| pso | Plant Stress Ontology | @cooperl09 | 16 | GitHub π’ | 18 | 2 | Yes π’ | π’ 1.4.3 | 2026-04-14 | 2026-01-09 | 0 | 0 | 429 | 5 | @cooperl09 (286) | pso | pso |
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| pw | Pathway ontology | @gthayman | 8 | GitHub π’ | 1 | 1 | Yes π’ | π΄ None | 2026-06-05 | 2025-06-12 | 0 | 0 | 61 | 3 | @tutajm (59) | pw | PW | pw |
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| rbo | Radiation Biology Ontology | @DanBerrios | 19 | GitHub π’ | 4 | 24 | Yes π’ | π’ 1.5.4 | 2026-09-24 | 2026-10-06 | 0 | 0 | 251 | 3 | @DanBerrios (226) | rbo | RBO | rbo |
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| ro | Relation Ontology | @cmungall | 27 | GitHub π’ | 113 | 54 | Yes π’ | π’ 1.6 | 2026-10-05 | 2026-10-05 | 14 | 42 | @balhoff (7) | 1051 | 42 | @cmungall (540) | other | ro | ro |
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| rs | Rat Strain Ontology | @shurjenw | 12 | GitHub π’ | 0 | 1 | Yes π’ | π΄ None | 2026-09-29 | 2024-01-17 | 0 | 0 | 155 | 3 | @tutajm (152) | rs | RS | rs |
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| rxno | Name Reaction Ontology | @batchelorc | 19 | GitHub π’ | 49 | 21 | Yes π’ | π΄ None | 2026-10-07 | 2026-10-09 | 25 | 7 | @NRayya (24) | 149 | 7 | @batchelorc (70) | cc-by-4.0 | rxno | RXNO | rxno |
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| sbo | Systems Biology Ontology | @rsmsheriff | 8 | GitHub π’ | 14 | 7 | Yes π’ | π΄ None | 2023-05-16 | 2026-09-30 | 0 | 0 | 17 | 4 | @krish193 (6) | artistic-2.0 | sbo | SBO | sbo |
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| scdo | Sickle Cell Disease Ontology | @JadeHotchkiss | 11 | GitHub π’ | 4 | 4 | Yes π’ | π΄ None | 2024-06-07 | 2024-05-31 | 0 | 0 | 152 | 8 | @scdodev (95) | scdo | SCDO | scdo |
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| sepio | Scientific Evidence and Provenance Information Ontology | @mbrush | 22 | GitHub π’ | 52 | 28 | Yes π’ | π’ 1.4 | 2025-10-02 | 2024-06-13 | 0 | 0 | 277 | 7 | @mbrush (250) | sepio | SEPIO | sepio |
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| slso | Space Life Sciences Ontology | @DanBerrios | 10 | GitHub π’ | 1 | 4 | No π΄ | π’ 1.5.4 | 2025-12-11 | 2025-09-29 | 0 | 0 | 149 | 1 | @DanBerrios (149) | slso | SLSO | slso |
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| so | Sequence types and features ontology | @keilbeck | 21 | GitHub π’ | 106 | 152 | Yes π’ | π΄ None | 2026-08-07 | 2026-10-09 | 0 | 0 | 204 | 9 | @davidwsant (102) | cc-by-4.0 | so | SO | so |
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| spd | Spider Ontology | @martinjramirez | 7 | GitHub π’ | 3 | 0 | Yes π’ | π΄ None | 2023-09-04 | 2023-09-04 | 0 | 0 | 25 | 3 | @martinjramirez (22) | spd | SPD | spd |
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| stato | The Statistical Methods Ontology | @proccaserra | 18 | GitHub π’ | 44 | 1 | Yes π’ | π΄ None | 2026-10-05 | 2026-10-03 | 0 | 0 | 392 | 3 | @agbeltran (212) | stato | STATO | stato |
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| swo | Software ontology | @allysonlister | 27 | GitHub π’ | 57 | 21 | Yes π’ | π’ 1.3.2-dev | 2023-03-05 | 2026-10-05 | 0 | 0 | 493 | 8 | @allysonlister (373) | cc-by-4.0 | swo | SWO | swo |
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| symp | Symptom Ontology | @lschriml | 23 | GitHub π’ | 48 | 5 | Yes π’ | π΄ None | 2026-07-31 | 2026-07-29 | 0 | 0 | 214 | 7 | @jbmunro (94) | cc0-1.0 | symp | SYMP | symp |
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| t4fs | terms4FAIRskills | @allysonlister | 12 | GitHub π’ | 17 | 17 | No π΄ | π’ 1.5.4 | 2025-02-09 | 2025-09-12 | 0 | 0 | 135 | 2 | @allysonlister (104) | other | t4fs | T4FS | t4fs |
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| taxrank | Taxonomic rank vocabulary | @balhoff | 16 | GitHub π’ | 7 | 3 | Yes π’ | π΄ None | 2025-09-24 | 2025-09-24 | 0 | 0 | 25 | 3 | @cthoyt (14) | cc0-1.0 | taxrank | TAXRANK | taxrank |
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| to | Plant Trait Ontology | @jaiswalp | 21 | GitHub π’ | 49 | 251 | Yes π’ | π΄ None | 2026-04-22 | 2026-10-03 | 0 | 0 | 1212 | 8 | @cooperl09 (663) | cc-by-4.0 | to | PTO | to |
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| trans | Pathogen Transmission Ontology | @lschriml | 16 | GitHub π’ | 8 | 3 | Yes π’ | π΄ None | 2026-07-29 | 2026-03-13 | 0 | 0 | 47 | 3 | @allenbaron (29) | cc0-1.0 | trans | trans |
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| tto | Teleost taxonomy ontology | @balhoff | 15 | GitHub π’ | 1 | 1 | Yes π’ | π΄ None | 2022-04-19 | 2022-04-19 | 0 | 0 | 73 | 3 | @pmidford (69) | cc0-1.0 | tto | TTO | tto |
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| txpo | Toxic Process Ontology | @yuki-yamagata | 7 | GitHub π’ | 1 | 2 | Yes π’ | π΄ None | 2022-12-07 | 2025-02-24 | 0 | 0 | 77 | 3 | @txpo-ontology (74) | txpo | TXPO | txpo |
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| uberon | Uberon multi-species anatomy ontology | @cmungall | 30 | GitHub π’ | 165 | 303 | Yes π’ | π’ 1.6.1 | 2026-10-05 | 2026-10-09 | 0 | 0 | 4922 | 51 | @cmungall (2876) | other | uberon | UBERON | uberon |
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| uo | Units of measurement ontology | @gkoutos | 22 | GitHub π’ | 26 | 27 | Yes π’ | π’ 1.6 | 2026-10-06 | 2026-10-06 | 0 | 0 | 50 | 9 | @KrishnaTO (17) | cc-by-4.0 | uo | UO | uo |
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| upheno | Unified Phenotype Ontology (uPheno) | @jamesamcl | 21 | GitHub π’ | 87 | 316 | Yes π’ | π’ 1.6 | 2026-10-01 | 2026-10-01 | 0 | 0 | 1473 | 24 | @nicolevasilevsky (566) | cc0-1.0 | upheno | UPHENO | upheno |
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| vbo | Vertebrate Breed Ontology | @sabrinatoro | 21 | GitHub π’ | 16 | 60 | Yes π’ | π’ 1.6 | 2026-08-27 | 2026-08-27 | 0 | 0 | 299 | 5 | @sabrinatoro (153) | vbo | VBO | vbo |
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| vo | Vaccine Ontology | @yongqunh | 19 | GitHub π’ | 18 | 16 | Yes π’ | π΄ None | 2026-06-12 | 2026-09-22 | 0 | 0 | 756 | 11 | @zhengj2007 (417) | vo | VO | vo |
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| vt | Vertebrate trait ontology | @caripark | 19 | GitHub π’ | 7 | 0 | Yes π’ | π΄ None | 2026-10-09 | 2026-06-24 | 0 | 0 | 179 | 4 | @zhiliangme (149) | cc-by-4.0 | vt | VT | vt |
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| vto | Vertebrate Taxonomy Ontology | @balhoff | 12 | GitHub π’ | 2 | 6 | Yes π’ | π΄ None | 2017-12-08 | 2023-02-14 | 0 | 0 | 2 | 2 | @hlapp (1) | cc0-1.0 | vto | VTO | vto |
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| wbbt | C. elegans Gross Anatomy Ontology | @raymond91125 | 24 | GitHub π’ | 7 | 6 | Yes π’ | π’ 1.2.22 | 2026-03-11 | 2026-03-11 | 0 | 0 | 105 | 5 | @raymond91125 (45) | cc-by-4.0 | wbbt | WB-BT | wbbt |
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| wbls | C. elegans development ontology | @chris-grove | 22 | GitHub π’ | 5 | 0 | Yes π’ | π’ 1.6.1 | 2026-04-16 | 2026-04-16 | 0 | 0 | 78 | 3 | @chris-grove (68) | cc-by-4.0 | wbls | WB-LS | wbls |
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| wbphenotype | C. elegans phenotype | @chris-grove | 24 | GitHub π’ | 11 | 3 | Yes π’ | π’ 1.6.1 | 2026-04-16 | 2026-04-16 | 0 | 0 | 379 | 2 | @chris-grove (297) | cc-by-4.0 | wbphenotype | WB-PHENOTYPE | wbphenotype |
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| xao | Xenopus Anatomy Ontology | @seger | 15 | GitHub π’ | 8 | 3 | Yes π’ | π΄ None | 2026-09-15 | 2026-06-15 | 0 | 0 | 126 | 3 | @seger (124) | xao | XAO | xao |
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| xco | Experimental condition ontology | @jrsjrs | 10 | GitHub π’ | 2 | 1 | Yes π’ | π΄ None | 2026-09-29 | 2026-07-31 | 0 | 0 | 154 | 4 | @tutajm (148) | xco | XCO | xco |
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| xlmod | HUPO-PSI cross-linking and derivatization reagents controlled vocabulary | @lutzfischer | 7 | GitHub π’ | 2 | 1 | No π΄ | π΄ None | 2026-07-24 | 2026-08-14 | 0 | 0 | 58 | 6 | @douweschulte (23) | apache-2.0 | xlmod | XLMOD | xlmod |
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| xpo | Xenopus Phenotype Ontology | @seger | 20 | GitHub π’ | 11 | 17 | Yes π’ | π’ 1.5 | 2025-07-25 | 2025-11-06 | 0 | 0 | 324 | 3 | @seger (196) | xpo | XPO | xpo |
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| zeco | Zebrafish Experimental Conditions Ontology | @ybradford | 11 | GitHub π’ | 4 | 22 | Yes π’ | π΄ None | 2022-03-06 | 2024-05-16 | 0 | 0 | 30 | 2 | @ybradford (21) | zeco | ZECO | zeco |
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| zfa | Zebrafish anatomy and development ontology | @cerivs | 15 | GitHub π’ | 8 | 48 | Yes π’ | π΄ None | 2026-09-23 | 2026-07-16 | 0 | 0 | 66 | 6 | @matentzn (22) | other | zfa | ZFA | zfa |
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| zfs | Zebrafish developmental stages ontology | @cerivs | 15 | GitHub π’ | 8 | 48 | Yes π’ | π΄ None | 2026-09-23 | 2026-07-16 | 19 | 6 | @matentzn (10) | 66 | 6 | @matentzn (22) | other | zfs | ZFS | zfs |
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| zp | Zebrafish Phenotype Ontology | @ybradford | 21 | GitHub π’ | 9 | 22 | Yes π’ | π’ 1.6.1 | 2026-10-08 | 2026-10-09 | 0 | 0 | 318 | 4 | @matentzn (269) | zp | ZP | zp |
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