Today’s featured promo on MacUpdate offers Synk Pro for US$24.95 (Synk Pro% off, retail $45). “Synk… The professional’s synchronization toolkit. N-way synchronizations, advanced rule capabilities for arbitrary actions and archiving, flexible scheduling options, and more. All versions of Synk 6 feature the revolutionary new ZeroScan technology, which makes updating backups up to 100 times faster than competing products and previous versions of Synk.” Synk Pro requires Mac OS X 10.4 or later.