.ctx
1 claimant
0 primary
0 secondary
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.
35.3K
total files
6.5K
first seen 2021–2025 (18.3%)
2018
median year (half its files since)
Case variants in archive: .ctx (34.8K), .CTX (447), .Ctx (62), .cTX (1) — aggregated above.
Attribution status
This extension is attributed to Visual Basic .NET — every claim across all sources (including secondary ones) points to a single language.
Authoritative sources: ✗ Linguist · no claim ✗ Pygments · no claim ✗ Wikidata · no claim △ Wikipedia · secondary
Claimants (1)
Languages that list
.ctx among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Visual Basic .NET | wikipedia | proposed |
Wikidata says… (3)
File formats, image formats, audio codecs and other non-PL
entities that claim
.ctx 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 |
|---|---|---|---|---|---|
| Gasteiger group CTX file format Q55388980 chemical file format | chemical file format | — | chemical/x-ctx | — | Use as new PL ↗ |
| Softdisk Text Compressor Q34743262 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| Sundial Clearlook document Q105850614 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .ctx in our local mirror yet.