Works great - very useful
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
deborphan - deborphan finds packages installed on your Debian/GNU system that have no other packages depending...
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
localepurge - This is a script to recover disk space wasted for unneeded locales, Gnome/KDE localizations and...
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
debfoster - Debian uses the main programs apt and dpkg to manage packages.