.sw
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.
51.4K
total files
29.8K
first seen 2021–2025 (57.9%)
2022
median year (half its files since)
Case variants in archive: .sw (51.3K), .SW (162) — aggregated above.
Attribution status
This extension is attributed to Sway as primary by 1 authoritative claim.
Authoritative sources: ✓ Linguist ✗ Pygments · no claim ✗ Wikidata · no claim ✗ Wikipedia · no claim
Claimants (2)
Languages that list
.sw among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Sway | linguist | primary |
| xml | linguist | secondary |
Wikidata says… (1)
File formats, image formats, audio codecs and other non-PL
entities that claim
.sw 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 |
|---|---|---|---|---|---|
| Signed word (16-bit) data - Little Endian Q111342769 file format | file format | — | — | — | Use as new PL ↗ |
Disambiguation rules (2)
Linguist heuristics that decide, by content, which language a
.sw file actually is.| Rule | Predicts | Kind | Predicates (truncated) | Measured on SWH |
|---|---|---|---|---|
h/linguist/.sw/0 | Sway | predicates | [{"kind": "any", "regexes": ["^\\s*(?:(?:abi|dep|fn|impl|mod|pub|trait)\\s|#\\[)"]}] | |
h/linguist/.sw/1 | xml | predicates | [{"kind": "any", "regexes": ["^\\s*<\\?xml\\s+version"]}] |
SWH-mined examples (0)
No archived examples for .sw in our local mirror yet.