.cob
1 claimant
1 primary
0 secondary
unambiguous primary
SWH popularity
From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.
55.1K
total occurrences
14.8K
since 2019 (26.9%)
1970–2023
years active
Case variants in archive: .cob (48.5K), .COB (6.6K), .Cob (3), .COb (1) — aggregated above.
Attribution status
This extension is attributed to COBOL; COBOL; COBOL as primary by 3 authoritative claims.
Claimants (3)
Languages that list
.cob among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| COBOL | linguist | primary |
| COBOL | pygments | primary |
| COBOL | wikidata | primary |
Wikidata says… (3)
File formats, image formats, audio codecs and other non-PL
entities that claim
.cob on Wikidata
(property P1195) or in the Wikipedia infobox.
Source: data/derived/external_extension_index.csv.
Click Use as new PL on any row to open the
Add-PL form pre-filled with that entry's name, Wikipedia/Wikidata
URL, and this extension — one submission creates the PL + claim.
| Format | Class (Wikidata P31) | Suggested label | MIME | Notes | Action |
|---|---|---|---|---|---|
| Caligari TrueSpace file format Q47462143 binary file format | file format | — | — | — | Use as new PL ↗ |
| Caligari TrueSpace file format (ASCII) Q47462131 file format | file format | — | — | — | Use as new PL ↗ |
| Caligari TrueSpace Object Q105849776 file format | file format | — | — | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .cob in our local mirror yet.