Best API Documentation Tools · alternatives
Best Stoplight alternatives (2026)
9 alternatives to Stoplight in api documentation tools, ranked by entry price. Stoplight starts at $0/mo. Every figure links to the public page it was captured from — the vendor's own wherever the vendor publishes the number, otherwise the named public source — with the date we captured it.
Key takeaways
- Free alternatives: Apidog, GitBook, Mintlify, ReadMe, Scalar, Theneo.
- Closest by price: Apidog ($0/mo), GitBook ($0/mo), Mintlify ($0/mo).
Stoplight alternatives compared
| # | Alternative | Entry price | Free | HIPAA | Best for | Source |
|---|---|---|---|---|---|---|
| 1 | Apidog | $0/mo | Yes | — | API-design | apidog.com |
| 2 | GitBook | $0/mo | Yes | — | knowledge-base | gitbook.com |
| 3 | Mintlify | $0/mo | Yes | — | developer-documentation | mintlify.com |
| 4 | ReadMe STALE · 2026-06-15 | $0/mo | Yes | — | developer-portals | readme.com |
| 5 | Scalar | $0/mo | Yes | — | open-source-API-docs | scalar.com |
| 6 | Theneo | $0/mo | Yes | — | AI-assisted-API-docs | theneo.io |
| 7 | Redocly | $10/mo | No | — | API-documentation | redocly.com |
| 8 | Bump.sh | $50/mo | No | — | API-changelog | bump.sh |
| 9 | Document360 | quote-only | No | — | knowledge-base | document360.com |
Data current through 2026-09-02. STALE marks a row with at least one plan we have not re-checked at its source in over 30 days. 1 of 9 rows above is marked. Compare any two directly on the API Documentation Tools index.