.mm
5 claimants
2 primary
3 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.
2.9M
total files
1.3M
first seen 2021–2025 (44.3%)
2020
median year (half its files since)
Case variants in archive: .mm (2.9M), .MM (260), .mM (8), .Mm (4) — aggregated above.
Attribution status
This extension is attributed to Objective-C; Objective-C++ as primary by 3 authoritative claims.
Claimants (6)
Languages that list
.mm among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Objective-C | wikidata | primary |
| Objective-C++ | linguist | primary |
| Objective-C++ | pygments | primary |
| JetBrains MPS | pygments | secondary |
| Maple | pygments | secondary |
| xml | linguist | secondary |
Wikidata says… (9)
File formats, image formats, audio codecs and other non-PL
entities that claim
.mm 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 |
|---|---|---|---|---|---|
| mm Q28777682 file format for mind mapping maps | file format | — | application/freemind; application/x-freemind | — | Use as new PL ↗ |
| Freeplane MindMap Q105861866 file format | file format | — | text/xml | — | Use as new PL ↗ |
| Matrix Market file format Q127120962 file format | file format | — | — | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .mm in our local mirror yet.