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

Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.

Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).

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

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

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