Kreya is a GUI client for gRPC, REST and WebSocket APIs with innovative features for environments, authorizations and more.




Cartero is described as 'Graphical HTTP client that can be used as a developer tool to test web APIs and perform all kind of HTTP requests to web servers. It is compatible with any REST, SOAP or XML-RPC API and it supports multiple request methods as well as attaching body payloads to' and is a HTTP Client in the development category. There are more than 50 alternatives to Cartero for a variety of platforms, including Mac, Linux, Windows, Web-based and Flathub apps. The best Cartero alternative is Bruno, which is both free and Open Source. Other great apps like Cartero 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.




API Tester is the first mobile app to test any type of API on the go. Test REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, and HTTPS APIs completely for free, on iOS or Android.








Runscope helps you monitor, log and measure API usage to solve API problems fast. Automatically monitor APIs without any coding. Runscope provides complete logging for all of your API traffic. Track down troublesome API calls with powerful search.



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...


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.

A cross-platform HTTP client desktop application for testing HTTP and REST APIs, WebSocket, GraphQL (including subscriptions) and gRPC endpoints.



All the user-friendliness of our Terminal version, now wrapped up in a sleek graphical interface.



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.


