Kreya is a GUI client for gRPC, REST and WebSocket APIs with innovative features for environments, authorizations and more.
Cost / License
- Freemium (Subscription)
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux




Thunder Client is described as 'Hand-crafted lightweight Http Client extension for Visual Studio Code. No separate download needed, Just install the extension from VS Code marketplace' and is a API Client in the development category. There are more than 50 alternatives to Thunder Client for a variety of platforms, including Mac, Windows, Linux, Web-based and Google Chrome apps. The best Thunder Client alternative is Bruno, which is both free and Open Source. Other great apps like Thunder Client are Postman, Insomnia REST Client, Yaak and HTTP Toolkit.
Kreya is a GUI client for gRPC, REST and WebSocket APIs with innovative features for environments, authorizations and more.




Milkman is a JavaFx-based workbench for crafting requests / responses. It is not limited to e.g. http (or more specifically rest) requests but can be extended in any imaginable way. It is optimized for fast startup and efficient workflow.


Used httpyac CLI tool underneath, which helps you execute _.http and _.rest files. This can be used to quickly execute a single *.http file, but also to execute all files in a folder. httpyac supports HTTP, Rest, GraphQL, WebSocket und gRPC...


The Zero Trust API Client - A Secure & Free Alternative to Postman , Insomnia & Thunder Client.




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.

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.




Httpiness is aimed to be a simple, straightforward HTTP client which minimizes time to configure, send, reconfigure and resend requests in order to maximize development efficiency.


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






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.

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.



