SlimCleaner comes with no restrictions on how many PCs you use it on and had great tuneup results in testing.
How it differs is in aggregating the collective data of many, many
SlimWare customers, so it has a much better idea of what to delete, what
to keep, and how to optimize a Windows PC for the best performance
On top of those socially powered improvements, SlimCleaner also
includes a duplicate file finder, a disk defrag, a disk analyzer so you
get a visual idea of a hard drive's contents, and a wiper that cleans
over the data you thought you deleted (but didn't really, due to the way
hard drives work.) It even works with solid-state drives.
And it's
portable: you can run SlimCleaner from a USB drive and take it from PC
to PC without having to re-install it each time.
