Best API Testing Tools in 2026
Updated
35 API testing tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
35ranked
3free plans on this page
4 Oct 2026last checked
3 of the 10 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 26 | PactumJSNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 27 | RestTestGenLinux · Self-hosted | One bar | — | 1 of 6 | Free | 5.1 | |
| 28 | Step CINo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 29 | Stoplight PrismWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 30 | TavernNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 31 | ReadyAPIWeb | One bar | — | — | 1 of 6 | — | 5.0 |
| 32 | REST AssuredAPI | One bar | — | 0 of 6 | Free | 4.9 | |
| 33 | RESTestWindows · Self-hosted | No signal | — | — | 1 of 6 | — | 4.9 |
| 34 | Frisby.jsAPI | No signal | — | — | 0 of 6 | — | 4.8 |
| 35 | SuperTestNo platforms listed | One bar | — | 0 of 6 | Free | 4.8 |
Compare all 10 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | GraphQL support | SOAP support |
|---|---|---|---|---|---|---|---|---|
| 26 | PactumJS | 5.1 | No | — | Yes | — | Yes | — |
| 27 | RestTestGen | 5.1 | Free plan | Free | Yes | — | — | — |
| 28 | Step CI | 5.1 | No | — | Yes | — | Yes | Yes |
| 29 | Stoplight Prism | 5.1 | No | — | Yes | — | — | — |
| 30 | Tavern | 5.1 | No | — | Yes | — | Yes | — |
| 31 | ReadyAPI | 5.0 | No | — | No | — | Yes | Yes |
| 32 | REST Assured | 4.9 | Free plan | Free | — | — | — | — |
| 33 | RESTest | 4.9 | No | — | — | — | — | — |
| 34 | Frisby.js | 4.8 | No | — | — | — | — | — |
| 35 | SuperTest | 4.8 | Free plan | Free | — | — | — | — |
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