Valgrind - Valgrind is an instrumentation framework for building dynamic analysis tools.
Bugsee - See video, network & logs leading up to bugs or crashes
WinAPIOverride - WinAPIOverride : This software allows you to monitor and/or modify any function of a process for any calling convention (stdcall or cdecl)
Buglife - Seriously awesome bug reporting for iOS apps
EasyHook - The reinvention of Windows API Hooking
Kuoll - E-commerce monitoring solution to prevent an online store from losses.