Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.
WinAPIOverride - WinAPIOverride : This software allows you to monitor and/or modify any function of a process for any calling convention (stdcall or cdecl)
Uilicious Snippet - Free testing platform to replicate & share website bugs 🐞
Valgrind - Valgrind is an instrumentation framework for building dynamic analysis tools.
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
Process Monitor - Monitor file system, Registry, process, thread and DLL activity in real-time.