Works great - very useful
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Scoop - A command-line installer for Windows
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
Windows Remix - Web-based batch software installer with zero dependencies. Recommended first visit after reinstalling Windows or buying a new laptop.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
App Grid - App Grid is an alternative to the Ubuntu Software Center.