Does anybody know if there is an equivalent app for Windows?

I hope it gets sitx support, and some error log/message when uncompressing multiple files and ending up with "archive is corrupted" message... ok, but which one?
Anyway, greatest app, Apple should learn from them!

@eliezer - Unarchiving .exe files isn't useless at all… While this is a lot less common nowadays, you still see some self-extracting zip files… That is, they're windows executables that just automatically extract the zip within. Inside the archive could be any number of things that a Mac user might want to get at. The unzip utility built into OS X actually supports these as well (unzip from command line, don't think BOMArchiveHelper does).

Recent 2.0 betas (builds and code) are on the google code site. Before, I'd have random errors on newer stuffit/sit and rars typically done on windows or with passwords. So far, no problems thus far and I enjoy the speed jump from stuffit.

The Unarchiver has its idiosyncrasies. It's snappy and light, however it doesn't support some of the formats it suggests. Rather strange is the fact that it seems to support unarchiving .exe files, which is obviously a tad useless (when it tried to expand one it gave errors). Also, .bin, .sit, and .sitx are unsupported although appear to be feasible. Nevertheless, it is useful for everyday usage.

word is password protected rars will be worknig with 2.0 which should be out at the beginning of this year (read: soon)

So apparently this thing has a problem with extracting .tbz files...

Wow! I've never seen a decompression app work this quickly and with such a simple interface. Dump Stuffit. I didn't realize what everyone meant by "bloated" until I tried Unarchiver.

May work for simple zip files, but has lots of problems with tar files containing symlinks et al. For instance, try downloading the source code from UNIX Network Programming and run <code>./configure</code> which will fail utterly with an "error: can not find sources in ...". Unpacking the file with "tar cfvz" works fine (ok, it still fails, but in this case because the 1995-style script doesn't recognize OS X).

nevermind.. password protected zip files. i got too excited for my own good. back to unrarx..