Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Google Chrome
- Firefox



OpenAstra is described as 'A chat-based platform for API discovery and testing' and is a API Client in the development category. There are more than 50 alternatives to OpenAstra for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best OpenAstra alternative is Bruno, which is both free and Open Source. Other great apps like OpenAstra are Postman, Insomnia REST Client, Yaak and Fiddler.



HTTP client plugin for Sublime Text with an expansive feature set, modern UX, elegant syntax and first class support for testing.




API Test Base is a free tool for integration testing a variety of APIs. It is suitable for Integration, ESB and Microservices testing.


Lama2 defines the human-friendly l2 syntax and CLI for describing and executing APIs. Store your APIs in plain-text files. Collaborate with team using version control (say, git). Run Lama2 directly from VSCode extension. Think of Lama2 as Markdown for APIs.






Assertible is the easiest way to test and monitor your APIs and helps reduce bugs in web apps by providing tools to continuously validate endpoints and responses with a flexible interface to run your tests any time and place.




Bearer is a developer tool that helps engineering teams monitor API requests, track performance, detect anomalies, and fix issues for their critical API usage. The solution monitors all outgoing API requests without proxying traffic.




RestCase is a security-focused API development platform that enables its users to rapidly create secure microservices, mock them in order to start testing, monitor APIs and collaborate on their development and testing.


Powerful IDE to work with API. Harness the power of scenarios, autocompletion and syntax highlight for API development. Write tests, share code without leaving the comfortable development environment.




Design and debug APIs in a powerful visual editor. Describe and debug easily with JSON Schema support. Apidog is a complete set of tools that connects the entire API lifecycle, helping R&D teams implement best practices for API Design-first development.




FRequest is a fast, lightweight and opensource Windows / macOS / Linux desktop program to make HTTP(s) requests (e.g. call REST apis).




Users can use residential IP to hide their real IP address and set their IP address to other countries/regions, so as to be used in business scenarios such as data collection, market research, brand protection, social media, snapping up goods, search engine optimization, and...
