Best API Documentation Tools in 2026
Updated
API documentation tools help you explain interfaces and make endpoint guidance usable for developers. Compared on interactive API references, code samples, and OpenAPI import, the entries also let you consider versioning, custom domains, and hosting model as part of your documentation workflow. Check free-plan availability and paid-from pricing alongside those setup choices. Scalar, Apiary, and Redocly are among the tools shown. Look at how their listed reference and hosting capabilities match the API you need to document and the way your team maintains its materials.
API Documentation Tools, one module each.A lit port is something its maker publishes; 11 of 11 with a known API signal have a public API.
- 01 Scalar API yesFREE yesDOCS 7.4$150/mo
- 02 Theneo API yesFREE yesDOCS 7.4$10/mo
- 03 TypeDoc API yesFREE yesDOCS 7.4Free
- 04 Apiary API yesFREE yesDOCS 7.3Free
- 05 Endrel API yesFREE yesDOCS 7.3₹1,499/mo
- 06 Fern API yesFREE yesDOCS 7.3Free
- 07 Widdershins API yesFREE yesDOCS 7.2Free
- 08 Redocly API yesDOCS 7.0$10/mo
- 09 Swagger2Markup API yesDOCS 7.0
- 10 Bump.sh API yesDOCS 6.9$50/mo
- 11 JSDoc API yesDOCS 6.9
- 12 PilotDocs FREE yesDOCS 6.0$49/mo
- 13 ApiNotes FREE yesDOCS 5.9$19/mo
- 14 Javadoc FREE yesDOCS 5.9Free
- 15 Mihari FREE yesDOCS 5.9€19/mo
- 16 Palt FREE yesDOCS 5.9$19/mo
- 17 phpDocumentor FREE yesDOCS 5.9Free
- 18 Stoplight Elements FREE yesDOCS 5.9Free
- 19 Swagger Codegen FREE yesDOCS 5.9Free
- 20 Zudoku FREE yesDOCS 5.9Free
- 21 Doxygen FREE yesDOCS 5.8Free
- 22 RAML2HTML FREE yesDOCS 5.8Free
- 23 RapiDoc FREE yesDOCS 5.8Free
- 24 ReadMe FREE yesDOCS 5.8$250/mo
- 25 DapperDox DOCS 5.5
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | OpenAPI import | Interactive API reference |
|---|---|---|---|---|---|---|---|---|
| 1 | Scalar | 7.4 | Free plan | $150/mo | Yes | 150 /mo | Yes | Yes |
| 2 | Theneo | 7.4 | Free plan | $10/mo | Yes | 120 /mo | Yes | Yes |
| 3 | TypeDoc | 7.4 | Free plan | Free | Yes | |||
| 4 | Apiary | 7.3 | Free plan | Free | Yes | Yes | Yes | |
| 5 | Endrel | 7.3 | Free plan | ₹1,499/mo | Yes | Yes | Yes | |
| 6 | Fern | 7.3 | Free plan | Free | Yes | |||
| 7 | Widdershins | 7.2 | Free plan | Free | Yes | No | ||
| 8 | Redocly | 7.0 | $10/mo | No | ||||
| 9 | Swagger2Markup | 7.0 | Yes | No | ||||
| 10 | Bump.sh | 6.9 | $50/mo | 50 /mo | Yes | Yes | ||
| 11 | JSDoc | 6.9 | Yes | |||||
| 12 | PilotDocs | 6.0 | Free plan | $49/mo | Yes | 49 /mo | Yes | Yes |
| 13 | ApiNotes | 5.9 | Free plan | $19/mo | Yes | 19 /mo | Yes | Yes |
| 14 | Javadoc | 5.9 | Free plan | Free | Yes | No | No | |
| 15 | Mihari | 5.9 | Free plan | €19/mo | Yes | |||
| 16 | Palt | 5.9 | Free plan | $19/mo | Yes | 19 /mo | Yes | Yes |
| 17 | phpDocumentor | 5.9 | Free plan | Free | No | No | ||
| 18 | Stoplight Elements | 5.9 | Free plan | Free | Yes | Yes | Yes | |
| 19 | Swagger Codegen | 5.9 | Free plan | Free | Yes | Yes | ||
| 20 | Zudoku | 5.9 | Free plan | Free | Yes | Yes | Yes | |
| 21 | Doxygen | 5.8 | Free plan | Free | Yes | |||
| 22 | RAML2HTML | 5.8 | Free plan | Free | No | |||
| 23 | RapiDoc | 5.8 | Free plan | Free | Yes | Yes | Yes | |
| 24 | ReadMe | 5.8 | Free plan | $250/mo | Yes | 250 /mo | ||
| 25 | DapperDox | 5.5 | Yes | Yes |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.