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API Testing Platforms
API Testing Platforms
Product
Postman is an API platform for designing, testing, documenting, and monitoring APIs with collaboration features for developer teams.
Swagger by SmartBear provides API design, documentation, testing, and governance tools built around the OpenAPI specification standard for API-first development.
Headquarters
San Francisco, California
Remote
Company size
501-1,000 employees
201-500 employees
Free options
Free plan, Free trial
Free plan
Source updated
Nov 2, 2026
Oct 29, 2026
Capabilities
Plan capabilities
Integrations
Buyer fit
Best for
Company size
Security and switching
Security reviews
Security and migration
Case studies and sources
Case studies
Customer evidence
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API Testing Platforms Product Category Price Offer
Postman Postman is an API platform for designing, testing, documenting, and monitoring APIs with collab… API Testing Platforms In comparison Swagger Swagger by SmartBear provides API design, documentation, testing, and governance tools built ar… API Testing Platforms In comparison Parasoft Software testing platform offering API, UI, and DevOps tools for quality engineering. API Testing Platforms Perfecto Perforce's enterprise cloud testing platform for web and mobile apps offering AI-driven test au… API Testing Platforms Requestly Browser extension and desktop app for intercepting, modifying, and mocking HTTP requests for de… API Testing Platforms $9 / user / month $9 / user / month Loadmill AI-powered API testing platform that automatically generates and executes API tests from real t… API Testing Platforms Free Free APIContext API monitoring and performance platform delivering global testing, compliance evidence, and ava… API Testing Platforms Assertible Automated API testing and monitoring service that validates web services with continuous integr… API Testing Platforms Free Free Schemathesis Property-based API testing tool that automatically generates test cases from OpenAPI and GraphQ… API Testing Platforms Free Free Stepci Open source API testing and monitoring tool that uses YAML-defined test workflows for CI/CD int… API Testing Platforms Free Free Postman alternatives Swagger alternatives 
