librosa : librosa is a python package for music and audio analysis. It provides the building blocks necessary to create music information retrieval systems.
Phantomas : PhantomJS-based web performance metrics collector and monitoring tool
tracing-framework : Rich tools for instrumenting, analyzing, and visualizing web apps.
MySQLTuner : MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stabi...
The Coach : The coach helps you find performance problems on your web page. Think of the coach as a modern version of YSlow. The coach will give advice of how you...
Dex is a MongoDB performance tuning tool that compares queries to the available indexes in the queried collection(s) and generates index suggestions based on simple heuristics.