WireMock : Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs t...
Maestro : Maestro is an open-source framework that makes UI and end-to-end testing for Android, iOS, and web apps simple and fast.
Write your first test in unde...
Appwrite : Appwrite is an end-to-end backend server for Web, Mobile, Native, or Backend apps packaged as a set of Docker microservices. Appwrite abstracts the co...
Flagr : Flagr is an open source Go service that delivers the right experience to the right entity and monitors the impact. It provides feature flags, experime...
httpbin.org : A simple HTTP Request & Response Service.
Mockoon is the easiest and quickest way to design and run mock APIs. No remote deployment, no account required, free and open-source.