.cfg
2 claimants
1 primary
1 secondary
unambiguous primary
SWH popularity
Distinct files in the full Software Heritage archive (2026-06-04 export), dated by first appearance, following Desmazières, Di Cosmo, Lorentz (MSR 2025). Case-aggregated. citation.
10.7M
total files
4.6M
first seen 2021–2025 (43.4%)
2020
median year (half its files since)
Case variants in archive: .cfg (10.7M), .CFG (23.2K), .Cfg (257), .CFg (3) — aggregated above.
Attribution status
This extension is attributed to HAProxy as primary by 1 authoritative claim.
Authoritative sources: ✓ Linguist △ Pygments · secondary ✗ Wikidata · no claim ✗ Wikipedia · no claim
Claimants (4)
Languages that list
.cfg among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| HAProxy | linguist | primary |
| HAProxy | pygments | secondary |
| ini | linguist | secondary |
| ini | pygments | secondary |
Wikidata says… (38)
File formats, image formats, audio codecs and other non-PL
entities that claim
.cfg 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 |
|---|---|---|---|---|---|
| Agat Emulator Configuration Q105849708 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| AGS game configuration Q105850253 file format | file format | — | text/plain | — | Use as new PL ↗ |
| ASIC Project/Configuration Q105865148 file format | file format | — | text/plain | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .cfg in our local mirror yet.