CPC (Continuation Passing C) is a programming language designed for writing concurrent systems. The CPC programmer manipulates very lightweight threads, choosing whether they should be cooperatively or preemptively scheduled at any given point; the CPC program is then processed by the CPC translator, which produces highly efficient event-loop code. This approach gives the best both worlds: the relative convenience of programming with threads, and the low memory usage of event-loop code. The semantics of CPC is defined as a source-to-source translation from CPC into plain C using a technique known as conversion into Continuation Passing Style. The current implementation of CPC has been used to write Hekate, a BitTorrent seeder designed to handle millions of simultaneous torrents and tens of thousands of simultaneously connected peers.
Game Controller Hack (GCH) allows you to use a game controller (like a game pad or joystick) with games which do not support them. It achieves this by mapping the directional input (like analogue joysticks and directional pads) and button presses to mouse and keyboard events. This allows all types of games to be played, from first person shooters to simple 2D flash games.
Ingatan is a clean, intuitive, and highly flexible memory quiz generator. It is perfect for a huge range of applications, including learning languages, remembering physics equations, labelling anatomical diagrams, practising any type of exam question, and reviewing organic chemistry mechanisms. When asking questions, a bias is placed toward those with a low historical grade. An inline symbol menu makes it easy to insert non-keyboard characters. Questions are intelligently organised into libraries, and libraries into groups, and can easily be shared.
MightyString adds array functionality and other tools for Ruby strings, including matching, indexing, substitution, and deletion. MightyString::HTML.strip_html provides more ideal HTML-to-ASCII formatting output. This is an advanced block "filtering" module. It works very well, with extremely rare cases which fall through its fingers.