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

Stack trace visualizer

Hosting git repositories -- Gitolite allows you to setup git hosting on a central server, with very fine-grained access control and many (many!) more powerful features.

SICP PDF with Texinfo and LaTeX source

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

Main repository for munin master / node / plugins

Tool for creating snapshots and remote backups of btrfs subvolumes

Tools for Linux/Unix sysadmins.

A tool for checking backward API/ABI compatibility of a C/C++ library

A tool for checking backward API/ABI compatibility of a Java library

A tool for visualizing changes in Linux software packages

A tool to visualize ABI changes timeline of a C/C++ software library

Dump ABI of an ELF object containing DWARF debug info

Making frozen bubble cross platform