This is a tool to manually explore and test HTTP REST webservices. Runs queries from a plain-text query sheet, displays results as a pretty-printed XML, JSON and even images.
Platforms
- Mac
- Windows
- Linux
- GNU Emacs

gRPC is described as 'Modern open source high performance Remote Procedure Call (RPC) framework that can run in any environment. It can efficiently connect services in and across data centers with pluggable support for load balancing, tracing, health checking and authentication' and is an app. There are more than 50 alternatives to gRPC for a variety of platforms, including Mac, Windows, Linux, Web-based and Google Chrome apps. The best gRPC alternative is Postman, which is free. Other great apps like gRPC are Insomnia REST Client, Yaak, Hoppscotch and HTTP Toolkit.
This is a tool to manually explore and test HTTP REST webservices. Runs queries from a plain-text query sheet, displays results as a pretty-printed XML, JSON and even images.

RESTClient can be used to test variety of HTTP communications and RESTful webservices. Friendly GUI, rich functionalities.






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




If you like the interface of HTTPie but miss the features of curl, curlie is what you are searching for. Curlie is a frontend to curl that adds the ease of use of httpie, without compromising on features and performance.

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apiman is an open source API management layer that streamlines repetitive tasks often required when providing an API, such as implementing security, throttling and billing.
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.




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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...






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



