.boo
2 claimants
2 primary
0 secondary
shared primary (2)
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.
77.7K
total files
1.1K
first seen 2021–2025 (1.5%)
2010
median year (half its files since)
Case variants in archive: .boo (77.6K), .BOO (27), .Boo (14), .bOo (2) — aggregated above.
Attribution status
This extension is attributed to Boo; Boo (programming language) as primary by 3 authoritative claims.
Claimants (3)
Languages that list
.boo among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Boo | linguist | primary |
| Boo | pygments | primary |
| Boo (programming language) | pygments | primary |
Wikidata says… (2)
File formats, image formats, audio codecs and other non-PL
entities that claim
.boo 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 |
|---|---|---|---|---|---|
| boo script Q128693897 file format | file format | — | text/x-boo | — | Use as new PL ↗ |
| Booasm Compressed Archive Q126811698 file format | file format | — | — | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .boo in our local mirror yet.