Bruno may suit developers who want API collections stored and reviewed with Git.
Free plan Free trial Open source From $6 a month, billed yearly WindowsMacLinuxBrowser extensionAPISelf-hosted
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Best API Testing Tools 2026
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.
02
Karate
Karate suits teams that want API, UI, mock, and performance tests in one framework.
WindowsMacLinux+3 Record6.1 Visit
03
SoapUI
SmartBear describes SoapUI as a starting point for developers and testers working with API testing.
WindowsMacLinux+2 Record6.1 Visit
04
Apidog
Apidog suits teams that design and test APIs, particularly those using specifications, automated request sequences, or Postman scripts.
WebWindowsMac+4 Record6.0 Visit
05
HTTPie
HTTPie suits developers and teams who build tools, apps, and technologies and need to work with APIs.
WebWindowsMac+1 Record6.0 Visit
6
Insomnia
WindowsMacLinux+1 $12 a month Record5.8 Visit Insomnia suits developers and teams that design, test or govern APIs and want collaboration or CI/CD workflows.
7
Pact
WindowsMacLinux+2 $115.42 a month, billed yearly Record5.8 Visit Pact suits development teams that own both consumer and provider applications and want to check integrations in isolation.
8
Postman
WebWindowsMac+2 $9 a month, billed yearly Record5.8 Visit Postman suits developers and teams that need API design, testing, documentation, or monitoring tools.
10
Yaak
WindowsMacLinux $79 a year Record5.8 Visit Yaak suits API developers who need to send and debug requests, and teams that organize shared API work through Git.
11
Hoppscotch
WebWindowsMac+3 $6 a month, billed yearly Record5.7 Visit Hoppscotch suits developers and teams creating, testing, documenting, and sharing APIs, including teams that want self-hosted deployment or collaborative workspaces.
12
PactFlow
WebLinuxAPI+1 $115.42 a month, billed yearly Record5.7 Visit PactFlow suits teams coordinating contracts across distributed services and source-control workflows.
13
Keploy
WebWindowsMac+4 $19 a month Record5.6 Visit Keploy suits software teams that want to turn application traffic into regression tests and dependency sandboxes for local development or CI.
14
ReadyAPI
WebWindowsMac+3 — Record5.5 Visit ReadyAPI suits teams handling API functional, security, performance, or virtualization work.
15
Kreya
WindowsMacLinux Free plan Record5.4 Visit Kreya suits developers who work with several API protocols and want testing or CI/CD workflows in a desktop client.
16
Assertible
WebAPI $25 a month Record5.2 Visit Assertible is aimed at QA professionals, developers and others responsible for operating a web service.
17
EvoMaster
WindowsMacLinux+2 Free plan Record4.9 Visit EvoMaster suits developers and teams who need automated API testing across REST, GraphQL, or RPC interfaces.
18
EvoMaster
WindowsMacLinux+2 Free plan Record4.9 Visit It suits developers and testers working with web, enterprise, REST, GraphQL, or RPC applications.
19
Hurl
WindowsMacLinux+1 Free plan Record4.9 Visit Hurl suits developers who want to run HTTP requests from the command line, test API sessions, or add request checks to CI/CD pipelines.
20
Parasoft SOAtest
AndroidiPhone & iPadWindows+4 — Record4.9 Visit SOAtest suits QA, testing, and development teams working with APIs and microservices.
21
Schemathesis
WindowsMacLinux+1 Free plan Record4.8 Visit Schemathesis suits engineers testing OpenAPI or GraphQL APIs and incorporating checks into CI/CD.
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