You’ve likely seen hundreds, if not thousands, of “top 10″ lists of Mac OS X freeware floating around. Everybody seems recommend the same titles, which doesn’t make it easier for you to discover equally free, unique software. Popular titles are usually popular for a reason: they’re good. But obscure binaries can be just as nice to use.

1. MacOSaiX: From a source image, create mosaics easily with image searches from Google, Flickr, etc.
2. CosmicPainter: Spin art for your desktop (without the clean-up). Export still images and movie compositions, too!
3. QT Sync: Correct audio / video sync, ratio issues on-the-fly.
4. Sloth: There’s no easier way of discovering which files are open on your system at any given time (like, to the geekieth degree).
5. Tunatic: Identify a song simply by playing a sample of it into your microphone. Also available for Windows!
6. Bricksmith: Virtual Lego modeling. Try it, if only for the minifigure generator!
7. Mario Paint Composer: Eat your heart out, GarageBand. Also available for Windows!
8. RGB MusicLab: What does an image sound like? Find out by importing pixels and exporting sound bytes with the least amount of fuss and maximum amount of customization. Also available for Windows!

Not quite a list of 10 unique apps, but I’ve struggled to find items that aren’t listed “everywhere” else. Do you have any suggestions for me? Like, truly suggesting programs that “nobody” has heard about before?