Free Java monitoring library to easily instrument apps to measure performance detail over time with minimal overhead. Has dashboard, SVG graphs. Extends Jamon and its statistical data, same usage. http://www.e-peas.com/opensla/. JMX, SNMP planned.
EasyUnit is a unit testing framework for C++ and EC++ that intends to ease this process. It is based on CppUnitLite administration-free concept with the following additions: fixtures support, customizable test runner and results printer.
pUniConf is a rapid application development (RAD)framework for writing GUI applications in Perl/Gtk2, using plugins as the main source of interface design. Perl modules are coming soon, eliminating the need for plugins!
JDiag is an open source system information/diagnostics tool written in Java. It gathers information from various places in the system and places it into one log file for easy analysis by computer professionals.