* [UA3F v3.6.0](https://github.com/SunBK201/UA3F) – HTTP header and User-Agent rewriting/proxy tool supporting HTTPS, SOCKS5, TPROXY, REDIRECT, NFQUEUE, and OpenWrt/LuCI integration. * [Hoverfly v1.12.8](https://github.com/SpectoLabs/hoverfly) – Lightweight service-virtualization and API simulation tool for creating realistic mocks and testing failure scenarios.