BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.
Master/node to gather and graph "everything" on your systems using Tobi Oetiker's rrdtool. It can optionally warn your surveillance software. This software package was originally called LRRD. The project. Please see http://munin-monitoring.org/
swet (sustained workload & efficiency test) is a portable benchmark for POSIX and BSD operating systems with multi-thread and multi-process capabilities and flexible, powerful report options.
Watchdog is a Java performance monitoring and tuning framework. It is suitable for production environments allowing flexible auditing of performance data for later analysis by a comprehensive set of tools.
PHP Profiler is both a Zend extension and module capable of generating profiling information (function call statistics) for PHP applications on the server side. No PHP code has to be changed, although the profiler data is available to your scripts.