Artha is a handy thesaurus based on WordNet with distinct features like global hot key look up, passive desktop notification, regular expression based search, etc. Artha may be used as a free open-source replacement/clone to the proprietary WordWeb Pro thesaurus (which is also based on WordNet) on Unix-like and Windows operating systems.
Conky Images Display is a program that displays the cover of the song currently playing. At the moment Rhythmbox, Amarok 1.4 and 2, and exaile are supported, but support for others is planned. It can also download missing covers. CID is fully configurable thanks to a simple configuration panel.
checkcopy is a GUI tool to copy the files and directories to some destination while creating checksums and/or verifying them. It reads all the checksum files, then reads in each file to copy it to the destination. If a checksum is present for the file, it will be verified, otherwise the checksum is written out to disk.
Compa is a GNOME panel applet which can display the output of any system command on the panel. It can also display the output of a different command in its tooltip, and launch a different command when clicked. The text style can be modified using the Text Attribute Markup Language.