A stack-based programming language and virtual machine.
Serialization libraries for Lua.
A security-enhanced fork of LÖVE. It runs games in a sandbox, so you can download and run LÖVE games from the internet without worrying about malware.
A small GTK+ application that can help you make automatic transformations of copied text. Useful for transliteration or things like adding or removing indentation if you're not using an editor that supports that already.
ok_write is distraction free, just-write-editing-comes-later, no-backspace-only-forward writing. It allows you to export what you've written to ODT for editing.