API Testing Tools
Alternatives to RestTestGen
The tools Specifiction weighs against RestTestGen, from its list of api testing tools, each with its plans, platforms and spec score.
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Apidog Apidog suits teams that need to design and test APIs from specifications, automate request sequences, or work with Postman data.
From $9/mo Free plan Web · Windows · macOS · Linux9.5 Visit Specs - 02
Bruno Bruno suits developers who want API collections stored and reviewed alongside project files in Git.
From $6/mo Free plan Open source Windows · macOS · Linux · API9.4 Visit Specs - 03 HTTPie
HTTPie suits developers and teams who test or debug APIs across a terminal, desktop, or web workflow.
From $10/mo Free plan Open source Web · Windows · macOS · Linux9.1 Visit Specs - 04
Karate Karate suits teams that want API, browser, or desktop testing in a shared framework, especially when they also need mocks or Gatling-based performance tests.
From $8.33/mo Free plan Open source Windows · macOS · Linux · API9.1 Visit Specs - 05
PactFlow PactFlow suits software teams that need contract testing across distributed services and want to connect checks to source-control workflows.
From $115.42/mo Free plan Web · Linux · API · Self-hosted8.9 Visit Specs - 06
Pact Pact suits developers working on integrations when their team controls both the consumer and provider applications.
From $115.42/mo Free plan Windows · macOS · Linux · API8.8 Visit Specs - 07
ReadyAPI Free trial Web · Windows · macOS · Linux8.8 Visit Specs - 08
SoapUI SoapUI suits developers and testers starting with API testing, especially those working with REST, SOAP, or GraphQL services.
From $89.08/mo Free plan Open source Windows · macOS · Linux · API8.8 Visit Specs - 09
Hoppscotch Hoppscotch suits individuals and teams building, testing, documenting or sharing APIs across its supported protocols.
From $6/mo Free plan Web · Windows · macOS · Linux8.6 Visit Specs - 10
Insomnia Insomnia suits developers and teams working across API design, testing, debugging, and mock generation.
From $12/mo Free plan Windows · macOS · Linux · Self-hosted8.6 Visit Specs - 11
Postman Postman suits people designing, testing, documenting, or monitoring APIs, including teams that need collaboration, integrations, or API testing across multiple protocols.
From $9/mo Free plan Web · Windows · macOS · Linux8.5 Visit Specs - 12 EvoMaster
It suits teams generating automated API and system tests across web or enterprise applications.
Free plan Windows · macOS · Linux · API8.4 Visit Specs - 13 Kreya
Kreya suits developers who need to explore or test APIs across several protocols, or automate API checks in CI/CD.
From $5/mo Free plan Windows · macOS · Linux8.4 Visit Specs - 14
Assertible Assertible is aimed at QA professionals, developers, and people who operate web services.
From $25/mo Free plan Web · API8.3 Visit Specs - 15 EvoMaster
EvoMaster suits teams that want to generate API tests for web or enterprise applications, including teams working with REST, GraphQL, or supported RPC APIs.
Free plan Windows · macOS · Linux · API8.3 Visit Specs - 16
Keploy Keploy suits development and QA teams that want traffic-derived tests, dependency mocks, and CI replay.
From $19/mo Free plan Web · Windows · macOS · Linux8.3 Visit Specs - 17 RESTest Free plan Windows · Linux · Self-hosted8.1 Visit Specs
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Apiary Apiary suits people designing or documenting APIs who want descriptions, mock responses, and automated checks in one hosted workspace.
Free plan Web · API8.0 Visit Specs - 19
Hurl Hurl suits developers who want to define HTTP requests as plain text and run API or session checks from the command line.
Free plan Windows · macOS · Linux · Self-hosted8.0 Visit Specs - 20
Parasoft SOAtest It suits QA teams, testers and development teams testing APIs and microservices.
Free trial Windows · macOS · Linux · iOS7.9 Visit Specs - 21
Tavern Free plan Linux · Self-hosted7.9 Visit Specs - 22
Thunder Client It suits developers who want an IDE-based API client and can work with locally stored collections.
From $3/mo Free plan Windows · macOS · Linux · Browser extension7.9 Visit Specs - 23
Citrus Citrus suits enterprise teams testing messaging scenarios, microservices, and other integrations.
Free plan Linux7.8 Visit Specs - 24 PactumJS Free plan API7.8 Visit Specs
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Yaak Yaak suits API developers and teams sharing requests through Git, especially those seeking control over local API data.
From $6.58/mo Free plan Windows · macOS · Linux7.8 Visit Specs - 26 HttpMaster Free plan Windows7.7 Visit Specs
- 27 Schemathesis
Schemathesis suits engineers testing OpenAPI or GraphQL APIs, especially those integrating API tests into CI/CD.
Free plan Windows · macOS · Linux · Self-hosted7.6 Visit Specs - 28 REST Assured Free plan API7.4 Visit Specs
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Stoplight Prism It suits teams developing frontend and backend work in parallel, validating API contracts, or virtualizing services before production.
Free plan Web · API · Self-hosted7.4 Visit Specs - 30 SuperTest Free plan7.3 Visit Specs