Thanks, Troy! I will add sit support soon, but sitx is a closed format. There's no documentation about it available, so I wont be able to add it. Sorry.

I'd love to have this feature! I still have to rely on other apps for Stuffit support. If this feature was added, I'd pretty much solely use BetterZip!

Thanks!

I'm totally of the same opinion, although I haven't bought BetterZip. There are still the odd .sit files around and as a result I have to have stuffit (it's so ugly) on my machine. I really don't want to run Stuffit AND BetterZip on my mac, and as soon as BetterZip supports .sit files I'll be buying.

Great looking app guys!

Natalie, BetterZip now supports sit archives. Sitx will probably never work as it is a proprietary, closed format. Fortunatly, this format is not very wide spread. And thanks for your kind words!