.b
5 claimants
2 primary
2 secondary
shared primary (2)
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.
165.4K
total occurrences
53.2K
since 2019 (32.2%)
1970–2023
years active
Case variants in archive: .b (138.0K), .B (27.5K) — aggregated above.
Attribution status
This extension is attributed to Brainfuck; Brainfuck; Limbo; Limbo as primary by 4 authoritative claims.
Claimants (8)
Languages that list
.b among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Brainfuck | linguist | primary |
| Brainfuck | wikidata | primary |
| Limbo | linguist | primary |
| Limbo | pygments | primary |
| Beef | pygments | secondary |
| Brainfuck | pygments | secondary |
| HyPhy | pygments | secondary |
| B | wikipedia | proposed |
Wikidata says… (14)
File formats, image formats, audio codecs and other non-PL
entities that claim
.b 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 |
|---|---|---|---|---|---|
| Applause II Batch (v2.0) Q105858605 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| B Source Code File Q117448918 file format | file format | — | — | — | Use as new PL ↗ |
| BundleFile Q105858725 file format | file format | — | — | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .b in our local mirror yet.