Requestly
Open-source Postman alternative to Test, Mock and Intercept APIs.
Requestly is an open-source API client for developers who need to send requests, inspect responses, and repeat tests across environments. You can work locally or sync projects with your team.
by BrowserStack Inc. · 81% positive (37)
What you get
You can test APIs without rebuilding requests for each environment.
With Requestly, you can check how an API responds without writing a separate program to call it. You set the request method, headers, and parameters, then inspect the response with formatted JSON and syntax highlighting. Related requests stay together in collections, so you can return to the same tests rather than recreate them.
You can reuse those requests across development, staging, and production by switching environment variables instead of editing fixed values. JavaScript scripts let you add tokens, set timestamps, and validate responses before or after requests, reducing the manual work in repeated checks.
You also choose how you keep and share your work. Local workspaces keep your data on your device, while optional cloud collaboration gives your team shared projects, Git sync, and role-based access. If you already use Postman, you can import your collections and environments rather than rebuild your setup.
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Inspect API responses
You can send custom requests and read formatted JSON responses to check what your API returns.
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Reuse tests across environments
You can switch between development, staging, and production using variables instead of manually replacing request values.
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Reduce repetitive checks
You can script token handling, timestamps, and response validation so you repeat less manual work.
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Choose local or shared work
You can keep projects on your device or collaborate through cloud workspaces with Git sync and role-based access.
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Keep your existing setup
You can import your Postman collections and environments instead of recreating requests.
Best for
- You develop APIs and repeat checks across multiple environments.
- You want to move existing Postman collections into an open-source client.
- Your team needs shared API projects alongside private local workspaces.
Skip it if
You probably don't need it if you don't send, inspect, or repeatedly test API requests.
Screenshots
From the developer
Requestly is a fast, lightweight API client that helps developers design, test, and debug APIs: all in one, without switching tools. Send and debug API requests in seconds Create and send API requests in seconds.Read the full description
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