Hazel $32 (approx £25)

noodlesoft.com

Hazel provides automated file management based on rules you attach to specific folders. So, you might set up one for your Downloads folder that moves various kinds of files – Pages, Numbers, and Keynote, for example – and moves them to your Documents folder so that they don‘t end up accidentally trashed when you’re tidying up. It can get rid of incomplete downloads after a certain period of time, which we find particularly helpful given our impatience when clicking download links.