The Refocus Gimp plug-in can be used to sharpen images. It is intended to be used for scanned photos and slides, and in many cases produces much better results than the sharpen or unsharp mask plugins. It features a preview that helps you to select the best parameters.
Rsync Vault Manager is an archive manager that uses rsync to manage backups of multiple clients across multiple logical partitions (vaults). It has some features that some other rsync-based backup schemes lack.
Ensemblist is a 3D puzzle game in which you have to model a given shape with geometric primitives that you must assemble with boolean operations (using constructive solid geometry).
Collection of KDE PIM applications that can be run in a platform independent way on various platforms, like Sharp Zaurus, Microsoft Windows, Linux and others that support Trolltechs Qt.
Distributed Internet Backup System works by doing all its communication through email. The benefit of using email for transport is that clients behind firewalls or with intermittent connections to the Internet can use DIBS reliably.
pgdiff compares the structures of two PostgreSQL databases and returns the differences as a sequence of SQL commands which can be fed to psql to transform the structure of the first to be identical to the second (analagous to diff and patch)