Xdebug Profiling Web Frontend in PHP
Sampling profiler for Python programs
Your application log analysis tool.
C/C++ function instrumentation (AOP, exception/stack tracing, GC)
Support for manual parallelization of sequential C programs.
Visualization of Java thread dumps
Manage and execute Linux testing and reporting programs
Simple, neat and powerful tool for loading and managing JS scripts
Aspect Oriented Programming (AOP) for Erlang
Library tools to collect timing in Java, C, C++
Simple C library for helping writting code with no memory leaks
Investigo - DX9 Performance and Debugging Toolkit
QProf is the visual tool for profiling text information.