Crossfire is a multi-player graphical arcade and adventure game made for X. It has certain flavours from other games, especially Gauntlet and the rogue-like games (Nethack, Moria, Angband, and Ragnarok). Any number of players can move around in their own window, finding and using items and battling monsters. They can choose to cooperate or compete in the same world.
Cryptogram Puzzle Tool helps solve the simple cryptogram puzzles that appear in the daily newspapers. While these puzzles can often be solved almost by inspection, CPT4 provides a handy tool the ones that turn out to be not quite so easy. If you just want a little bookkeeping help, CPT4 will instantly update all occurances of the new assignments as well as provide frequency and used/not-used letter lists as you drag-and-drop or key in suspected solution letters. But if you'd rather have the computer do the work, the automatic solution algorithm will usually come very close to a complete solution in just a few seconds. CPT4 can also create new puzzles from keyed in plaintext or from a file.
cthumb allows you to create Web albums of digital pictures with thumbnails, captions, and several different views of the collection, including (optionally) several languages and resolutions. An album is composed of a series of pages, each composed of a collection of pictures. You can have several annotations per picture, and can customize almost everything in the way the albums look on the screen.
ctk-nettools provides functions to deal with templates in Perl. It also provides other functions to do log, to get value from db-file (Btree or Hash), and to get the date. The principle of the templates handling is to use an HTTP server to serve the templates. There's also a cache handling to speed up templates loading and to have a copy in case of a crash of the templates server.
ctrlxmms is a small Perl script designed to increase the useability of XMMS. With it, you can use most of the common GUI functions of XMMS from the CLI. You also have a few handy commands which are not available from the GUI. Together with lirc and a remote (eg. Anir Multimedia Magic), this is a wonderful tool.