BleachBit

Description BleachBit 0.9.3: BleachBit 0.9.3 quickly frees disk space and tirelessly guards your privacy. Free cache, delete cookies, clear Internet history, shred temporary files, delete logs, and discard junk you didn't know was there. Designed for Linux and Windows systems, it wipes clean 90 applications including Firefox, Internet Explorer, Adobe Flash, Google Chrome, Opera, Safari,and more. Beyond simply deleting files, BleachBit 0.9.3 includes advanced features such as shredding files to prevent recovery, wiping free disk space to hide traces of files deleted by other applications, and vacuuming Firefox to make it faster. Better than free, BleachBit 0.9.3 is open source.

BleachBit changes since version 0.9.3:

Add feature for user-defined custom cleaners. In the preferences, easily choose files and folders you regularly want to clean, and then select them from cleaning under System - Custom. (Partially implemented by Joshua Reisenauer. Users can still write advanced cleaners using CleanerML or Winapp2.ini.)
Google Chrome and Chromium: Fix error "Favicons is version 23" with Google Chrome 23
Google Chrome and Chromium: Delete many more history files.
Google Chrome and Chromium: If bookmark files does not exist, do not throw an error
Clean FAT32 partitions with more than 4GB free space

Specific to Linux

Do not delete /usr/share/kde4/apps/ksgmltools2/customization required by kdelibs

Specific to Windows

Clean jump list icons in Firefox, Google Chrome, Chromium
Clean more recent documents
Clean more system log files
Clean more Internet Explorer history
Add support for new, application-specific sections in Winapp2.ini
Improve exception handling in winapp.ini
If the environment variable BB_NATIVE is set to FALSE (or to any value), then instead of using native Windows file/folder dialogs, BleachBit will use the GTK+ dialogs. (Most users should ignore this feature.)

Screenshoots BleachBit 0.9.3: