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



Posting is described as 'The modern API client that lives in your terminal' and is a API Client in the development category. There are more than 50 alternatives to Posting for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best Posting alternative is Bruno, which is both free and Open Source. Other great apps like Posting are Postman, Insomnia REST Client, Yaak and HTTP Toolkit.



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




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.


API Test Base is a free, offline-first tool for testing APIs and their side effects — the records an API writes to a database, the messages it publishes to a queue, the downstream services it calls. Test cases are created with a no-code / low-code UI, and the same tests can be...


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.








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





