API Monitor is a Windows program that lets you monitor and control API calls made by applications and services. Its a powerful tool for seeing how applications and services work or for tracking down problems that you have in your own applications.

Last version is from 2013. See: http://www.rohitab.com/apimonitor/changelog
API Monitor vs Valgrind Comments


- API Monitor is Free and Proprietary




























Valgrind is a memory debugger, API monitor is an api monitor. Different things entirely.