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.
Have you ever wondered which database indexes you should create for your JDBC-based application ? This Swing-based SQL profiler tries to offer a tool to monitor which tables and columns are accessed the most in SQL queries to recommend index creation