Best API Testing Tools in 2026
Updated
In short: Parasoft SOAtest is ranked #1 of 35 as of 4 October 2026, ahead of Apidog and Bruno. The best-ranked option with a free plan is Apidog. The lowest first paid tier on this page is Bruno at $0.50/mo.
API testing tools support different parts of checking APIs, from validating contracts to fitting tests into delivery workflows. Compare CI/CD integration and contract testing with GraphQL and SOAP support, mock server availability, and scheduled runs. Parasoft SOAtest, Apidog, and Bruno are among the entries shown. Included requests and free-plan availability can help you assess what is offered before paid tiers, while paid-from pricing adds a cost point. Consider the API formats you work with and how you want testing to fit into your workflow, then use the listed capabilities to compare suitable options.
35 API testing tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 Parasoft SOAtest iPhone + Android RecognisedPhone appDocumentedFree plan 7.2
- 2 Apidog No phone app RecognisedPhone appDocumentedFree plan 6.4$2.25/mo GraphQL support: YesSOAP support: YesScheduled runs: Yes
- 3 Bruno No phone app RecognisedPhone appDocumentedFree plan 6.4$0.50/mo GraphQL support: YesScheduled runs: Yes
- 4 Insomnia No phone app RecognisedPhone appDocumentedFree plan 6.4$12/mo GraphQL support: YesSOAP support: Yes
- 5 Karate No phone app RecognisedPhone appDocumentedFree plan 6.4$8.33/mo GraphQL support: YesSOAP support: YesScheduled runs: Yes
- 6 Kreya No phone app RecognisedPhone appDocumentedFree plan 6.4$5/mo GraphQL support: Yes
- 7 Pact No phone app RecognisedPhone appDocumentedFree plan 6.4$115.42/mo GraphQL support: Yes
- 8 Postman No phone app RecognisedPhone appDocumentedFree plan 6.4$9/mo GraphQL support: YesSOAP support: YesScheduled runs: Yes
- 9 Hoppscotch No phone app RecognisedPhone appDocumentedFree plan 6.3$6/mo GraphQL support: Yes
- 10 PactFlow No phone app RecognisedPhone appDocumentedFree plan 6.3$115.42/mo GraphQL support: NoSOAP support: No
- 11 SoapUI No phone app RecognisedPhone appDocumentedFree plan 6.3Free GraphQL support: YesSOAP support: YesScheduled runs: Yes
- 12 Apiary No phone app RecognisedPhone appDocumentedFree plan 6.2Free
- 13 Schemathesis No phone app RecognisedPhone appDocumentedFree plan 6.2Free GraphQL support: YesScheduled runs: Yes
- 14 Stoplight Elements No phone app RecognisedPhone appDocumentedFree plan 6.2Free
- 15 Thunder Client No phone app RecognisedPhone appDocumentedFree plan 6.1$3/mo
- 16 ReadyAPI No phone app RecognisedPhone appDocumentedFree plan 5.6 GraphQL support: YesSOAP support: YesScheduled runs: Yes
- 17 Yaak No phone app RecognisedPhone appDocumentedFree plan 5.5$6.58/mo GraphQL support: YesScheduled runs: No
- 18 Keploy No phone app RecognisedPhone appDocumentedFree plan 5.4 GraphQL support: YesSOAP support: No
- 19 Citrus No phone app RecognisedPhone appDocumentedFree plan 5.3 SOAP support: Yes
- 20 EvoMaster No phone app RecognisedPhone appDocumentedFree plan 5.3 GraphQL support: Yes
- 21 EvoMaster No phone app RecognisedPhone appDocumentedFree plan 5.3 GraphQL support: Yes
- 22 Hurl No phone app RecognisedPhone appDocumentedFree plan 5.3 GraphQL support: YesSOAP support: Yes
- 23 PactumJS No phone app RecognisedPhone appDocumentedFree plan 5.3 GraphQL support: Yes
- 24 Step CI No phone app RecognisedPhone appDocumentedFree plan 5.3 GraphQL support: YesSOAP support: Yes
- 25 Tavern No phone app RecognisedPhone appDocumentedFree plan 5.3 GraphQL support: YesScheduled runs: Yes
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which API testing tool is ranked first on Samsung Mobile US Press?
Parasoft SOAtest is ranked #1 of 35 with a score of 7.2. Apidog is second and Bruno third.
How many of these have a free plan?
14 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Bruno has the lowest first paid tier we found: $0.50/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.