* [Mockzilla v2.8.11](https://github.com/mockzilla/mockzilla) – OpenAPI-based mock server that generates realistic responses, validates requests, simulates latency and errors, and proxies with automatic mock fallback. * [ServeRest v3.2.2](https://github.com/ServeRest/ServeRest) – REST API simulating an online store for learning manual and automated API testing. * [Keploy v3.6.25](https://github.com/keploy/keploy) – Developer-centric API testing tool that creates tests and built-in mocks faster than unit tests. * [Keploy v3.6.24](https://github.com/keploy/keploy) – Developer-centric API testing tool that creates tests and built-in mocks faster than unit tests. * [Keploy v3.6.23](https://github.com/keploy/keploy) – Developer-centric API testing tool that creates tests and built-in mocks faster than unit tests. * [Keploy v3.6.22](https://github.com/keploy/keploy) – Developer-centric API testing tool that creates tests and built-in mocks faster than unit tests. * [Keploy v3.6.21](https://github.com/keploy/keploy) – Developer-centric API testing tool that creates tests and built-in mocks faster than unit tests. * [Rustman v0.3.12-dev.47](https://github.com/animeshchaudhri/rustman) – Lightweight desktop API testing app with native Rust HTTP engine, async pre/post scripts, test runner, and Postman compatibility.