Sputnik is a content management system (CMS) designed for extensibility. It works as a wiki out of the box, but can be extended into other things. It offers editable nodes, history and diff, user accounts with optional email validation, a flexible permission system, RSS feeds, and more. Sputnik supports access control and has editable templates. It can be used to maintain a personal Web site that doesn't look like a wiki and that only you can edit. Sputnik is easy to install on shared hosting without root accounts.
mydp is a program for processing mysqldump files in the manner of ‘awk’. It reads mysqldump SQL statements from standard input and executes Lua callback functions as table definitions and insert statements are encountered. The Lua callback functions are specified in a file passed to mydp via the command line. The callbacks are typically used to filter and process only a small subset of the MySQL dump data and/or save it for further processing. mydp is written in Lex and Lua.
Liquid PCB is a computer aided design application for designing printed circuit boards. Unlike other PCB CAD applications, you are not restricted to straight tracks and 45º angles. Instead, you can freely draw tracks any way you like, and the tracks themselves will move and bend as required to maintain your design rules. Vias and components are also free to move and rotate. The user interface exposes all functions through the multi-directional expanding mouse menu and the keyboard instead of through icons and menus.