Stack trace visualizer

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)

Sensible database change management

it's like Rainmeter, but for CLI!

Tools for Linux/Unix sysadmins.

templates to format geographic addresses

A simple C-like language compiler with an extensible syntax and typed macros support

Metaprogramming framework for .net

NLP for Common Lisp