deletes junk files to free disk space and improve privacy
BleachBit frees disk space and maintains privacy. Cleans cache, Internet history, temporary files, logs, cookies, Firefox, Google Chrome, Flash, Windows, Linux, and more. Downloads are at www.bleachbit.org and source code is at GitHub.
Powerful desktop search app for Windows, Linux and Mac
Power searching on your desktop without the pain. Perform powerful desktop searches without having to index your system using regular expressions. Graphical equivalent to find/grep. Available for Windows (JAVA) and Linux (Gnome & KDE) and easy to translate into your locale.
Datafari is an advanced open source enterprise search solution!
Integra desktop search engine - cross-platform, portable, embeddable, extensible search engine and search tools (both console and GUI) for developers and end-users. Full unicode support, easy UI localisation, plugins for document parsers and unpackers.