Works great - very useful
Website Carbon Calculator - Find out the how much CO2 your website emits
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Wren - Offset your carbon footprint by saving rainforests
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
Klima - Go carbon neutral
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode