It is a Process Monitoring Toolkit with the ability of Extend.
E.g. You can use it to monitor a specified process.
And set a triger like (over 50MB mem use) then do something like (report to DB).
Perf::Stopwatch is a Perl Module that can be quickly added and removed from any existing code to debug/optimize portions of code. Example of use are: database calls, loop efficiency, total script time, and webpage timeouts.
XPHP is an IDE authoring tool for Windows that allows you to design, develop, test, debug and deploy PHP applications. [This project has been discontinued since 2005]