Uptime Kuma is an easy-to-use self-hosted monitoring tool.

Easy-to-use website monitoring and uptime monitoring service in one

Design, debug, and test APIs locally or in the cloud

Testing and validating REST services in Java is harder than in dynamic languages such as Ruby and Groovy. REST Assured brings the simplicity of using these languages into the Java domain.

Mockoon is the easiest and quickest way to design and run mock REST APIs.

Bruno is a Fast and Git-Friendly Opensource API client, aimed at revolutionizing the status quo represented by Postman, Insomnia and similar tools out there.