Valgrind - Valgrind is an instrumentation framework for building dynamic analysis tools.
dotMemory - dotMemory allows users to analyze memory usage in a variety of .NET and .NET Core applications.
Process Monitor - Monitor file system, Registry, process, thread and DLL activity in real-time.
WinAPIOverride - WinAPIOverride : This software allows you to monitor and/or modify any function of a process for any calling convention (stdcall or cdecl)
OProfile - OProfile is an open source project that includes a statistical profiler, capable of profiling all running code at low overhead.
strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.