Postman - The Collaboration Platform for API Development
Valgrind - Valgrind is an instrumentation framework for building dynamic analysis tools.
Insomnia REST - The most intuitive cross-platform REST API Client ð´
WinAPIOverride - WinAPIOverride : This software allows you to monitor and/or modify any function of a process for any calling convention (stdcall or cdecl)
soapUI - SoapUI Pro is one of the most prominent API testing platforms around, allowing developers to quickly prototype the functions of their apps and get them to market with little hassle.
EasyHook - The reinvention of Windows API Hooking