FairUCE is a spam filter that prevents spam from reaching the recipient's inbox by verifying the identity of the sender. It will stop the vast majority of spam without the use of a content filter, and without requiring a probable spam or bulk folder that needs to be checked periodically.
ConceptBase is a multi-user meta-database system based on a deductive object manager. It is mainly intended for conceptual modeling and coordination in design environments. The system implements O-Telos, a dialect of Telos that amalgamates properties of deductive and object-oriented languages.
BlogMatrix Sparks! is a streaming Internet radio program recorder and podcast receiver. Downloaded programs are converted (via Mplayer and LAME) into MP3s and stored in your media player (iTunes or Windows Media Player). It uses an interactive directory of thousands of radio stations and podcasts to help you find content. It runs on Windows, Macintosh OS 10.3, and Linux.
libencio is a library providing a stdio-like interface for reading and writing of encrypted files (in MCrypt format only for now). Additionally, it provides full support for fseek()-like random read access of encrypted data. This allows one to operate on encrypted files as if they were ordinary, cleartext files. It could be used to provide MUAs with a layer to transparently handle encrypted attachments, as a backend to ffmpeg or mplayer to directly play encrypted files, or in combination with tar for encrypted backups. It uses libmcrypt and libmhash for encryption and hashing algorithms.
The Tcl IRCd is a small IRC server written in Tcl. It is very simple to modify. It is not a full implementation of the IRC protocol, but it's enough to create channels, talk in public or private, change topic, nick, and other basic operations. No configuration is required. The server is designed so that it can reload an updated version of itself at runtime without closing client connections.
Abandoned Bricks is a Tetris clone where bricks of various shapes fall from the top and you can move and arrange them to fit nicely on the bottom. When you fill a line without holes it is removed from the heap. It can be played either in a single-player or in a duel-mode with two players playing hotseat on the same computer. There is also a Bastet mode, based on the Bastet game by Federico Poloni.
Haxial Calculator is a high precision mathematical assistant that evaluates normal (infix) expressions to practically any accuracy. Results can be viewed in normal, fraction, or scientific forms, and it allows you to work in any radix. Worksheets enable you to solve larger problems in a more suitable environment, as well as allowing you to save your work. It also incorporates unit and radix conversion utilities and complete support for variables. Haxial Calculator employs a user interface that allows you to freely type expressions with the keyboard instead of mimicking the button presses of a hand-held calculator.
Marauder-ah is a set of improvements over "marauder", originally written by Shawn Hargreaves in 1994. You control a spaceship with a basic weapon, and your purpose is to kill as many people as you can. Earning money (using piracy or trade) enables you to upgrade your ship and buy deadly weapons.