no, k-meleon makes use of windows native widgets so it's strictly a windows-only product and not cross-platform which what makes it fast and responsive
the equivalent of k-meleon for mac is camino, same concept as k-meleon as in using gecko engine in proper programmed interface using mac's cocoa lib widgets
it's one of the best browsers for mac os x and no doubt the best gecko browser for os x
http://caminobrowser.org/