MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.
AutoHotkey - The ultimate automation scripting language for Windows.
Hoppscotch - Open source API development ecosystem
Pulover’s Macro Creator - Pulover’s Macro Creator is a Free Automation Tool and Script Generator.
HttpMaster - HttpMaster is a professional software tool for testing and debugging HTTP applications, primarily aimed at REST API applications and web services.
AutoKey - A Python 3 port of AutoKey, the desktop automation utility for Linux and X11.