cloc counts blank lines, comment lines, and physical lines of source code in many programming languages.

Stack trace visualizer

Make your diffs human readable for improved code quality and faster defect detection. 🎉

a tool for backing up your data using rsync (if you want to get help, use https://lists.sourceforge.net/lists/listinfo/rsnapshot-discuss)

Authentication, authorization, traceability and auditability for SSH accesses.

Percona Toolkit: a collection of advanced open source command-line tools.

LCOV