My Favorite Mac Software

A Better Finder Rename http://www.publicspace.net Rename files in batches a lot of different ways $19.95 plus options
Audio Hijack http://rogueamoeba.com/ Record any audio $49, free for sessions under 10 minutes (see site)
Avast Mac Security http://www.avast.com Protect both the Mac and whatever else you're running on top of it. free (annual reregistration)
ClipGrab http://clipgrab.de download YouTube videos, with good searching German donationware
Default Folder http://www.stclairsoft.com Things that have been missing from the file system forever. If you can see it, you can jump your file dialog to it. $34.95, free 30 days
Dropbox http://dropbox.com "Cloud" backup, sharing, and more. free
Fetch http://fetchsoftworks.com/ file transfer $29 (free for educational & charitable); I think you can try it out.
GraphicConverter http://www.lemkesoft.de Cheaper than Photoshop by miles. German shareware $39.95
iResize http://daniele.ch Resize photos easily Swiss Donationware
Klondike Forever http://www.solitaireforever.com/ Solitaire free
MacPaw Gemini http://macpaw.com/gemini Duplicate file finder. Ukrainian $4.99, free demo
Opal http://a-sharp.com/opal/ Outliner $32 (30 days free)
Parallels http://parallels.com Run Windows on your Mac (at the same time) $79.99 (with occasional specials