What are some alternatives?
When comparing strace and ftrace, you can also consider the following products
DTrace - DTrace is a performance analysis and troubleshooting tool for Solaris, Mac OS X and FreeBSD.
perf - Perf is a simple app monitoring solution paired with meaningful alerts.
API Monitor - API Monitor is a software that monitors and displays API calls made by applications and services. Its a powerful tool for seeing how Windows and other applications work or tracking down problems that you have in your own applications
ktap - A script-based dynamic tracing tool for Linux.
Magalix - Magalix is the autopilot of the cloud infrastructure.
Libcsdbg - C++ exception (and generic) stack trace debug suite