Evolvotron is an interactive "generative art" application to evolve images/textures/patterns through an iterative process of random mutation and user-selection driven evolution. If you like lava lamps, and never got tired of the Mandelbrot set, this could be the software for you. It's implemented using Qt, and is multithreaded.
SerLooK is a KDE application for inspecting data going over serial lines. It can work as a binary terminal that sends and receives data through a defined port (Point to Point mode) and displays them on separate views. Each view can be configured to display data in hexadecimal, decimal, octal, binary, and raw ASCII. It is also possible to perform I/O through terminal emulation views and define a secondary port and monitor the traffic between two external hosts using a "Y" cable (Snooper mode).
SourceHighlightIDE is an IDE for GNU Source-highlight. When given a source file, Source-highlight produces a document with syntax highlighting. In particular, SourceHighlightIDE is useful when you have to develop a new language definition file for Source-highlight. Source-highlight reads source language specifications dynamically, so it can be easily extended for handling new languages without recompiling the sources. SourceHighlightIDE is also useful when modifying or debugging an existing language definition file.
Fresh Memory is an application that helps you to learn large amounts of any material with Spaced Repetition method. The most important subject is learning foreign words, but Fresh Memory can also e used to learn anything else. Other examples are country's capitals and flags, chemical elements, mathematical formulas, and technical terms. The learning data is stored as flash cards and dictionaries: sets of cards. The flash cards may have several fields, and the user controls what combination of fields to learn. The flash cards can have formatted text and images. The look of flash cards and studying parameters are can be flexibly adjusted.
Qassir is a graphical frontend to manage encrypted folders. At the moment, it only supports mounting and unmounting folders encrypted with EncFS. Future releases will provide access to all of EncFS's functionality, i.e. creation of encrypted folders, changing the password for a folder, etc.
FatRat is a download manager that is rich in features and is continuously extended. Its features include HTTP(S)/FTP/SFTP downloads, FTP/SFTP uploads, RSS feed support with special functions for TV shows and podcasts, BitTorrent support (including torrent creation, DHT, UPnP, and encryption), torrent searching, Support for SOCKS5 and HTTP proxies, RapidShare.com FREE downloads, RapidShare.com uploads, RapidShare.com link verification and folder extraction, RapidSafe link decoding, MD4/MD5/SHA1 hash computing, remote control via Jabber or a Web interface, and YouTube video downloading.