The VG Resource

Hi, I've been wondering how to rip sprites on Mac. The reason is because my HP laptop, where I had my sheets, died.

TiledGGD should work on Mono. I use mostly Tile Molester, it's written in Java and works fantastically on Mac. You could also install Wine to use the numerous Windows-only tools like GGD, no$gba and the such.
As far as I know, there are very few Mac-specific ripping tools.