jf-unittest is a C++ unit test framework modeled after the way the Python unittest module is used in the Confix test suites. It was written out of frustration with the existing unittest frameworks. As such, it contains no bloat: no GUI with colorful progress bars, no dependencies on any other packages.
Perl::Critic is an extensible framework for creating and applying coding standards to Perl source code. Essentially, it is a static source code analysis engine. It is distributed with a number of Perl::Critic::Policy modules that attempt to enforce various coding guidelines. Most Policy modules are based on Damian Conway's book Perl Best Practices. However, Perl::Critic is not limited to PBP, and will even support Policies that contradict Conway. You can enable, disable, and customize those Polices through the Perl::Critic interface. You can also create new Policy modules that suit your own tastes.
CodeLite is a powerful, cross-platform code editor for the C/C++ programming languages. It is regularly tested on Windows XP sp2, (K)Ubuntu 7.10 and 8.04, Fedora Core 6, Debian lenny and sid, and Mac OS X 10.5.2. CodeLite uses a sophisticated, yet intuitive interface which allows the user to easily create and build complex projects.
Clone Digger is a duplicate code detection tool which supports the Python language. It works on the abstract syntax tree level. Discovered clones can differ in small subexpressions; comments and whitespaces are ignored. The report on found clones is written to HTML in a two-column format with the differences highlighted. Clone digger is platform-independent. It has been tested on several open-source projects and the results indicated that about 12% of their code is covered by clones.