If you work on both the Mac and Windows platforms, it's worth sacrificing some ease of use with StuffIt Deluxe 8.5 for Windows.
If you work on both the Mac and Windows platforms, StuffIt Deluxe 8.0 for Windows is the best compression app for you.
StuffIt 7.0 For Windows offers PC users a fast, powerful compression alternative. Use it if you trade files with Mac users or prefer its interface to WinZip's.
Symantec to use StuffIt 5.x technology
Utilities Updates: Toast Titanium 7.0.1; StuffIt Deluxe 10.0; StuffIt Expander 10.0; more
StuffIt 12 may conflict with Norton AntiVirus. (But why are you using either of them?)
That was fast! Smith Micro issues a patch to fix the conflict between StuffIt 12 and Norton AntiVirus.
Utilities Updates: StuffIt Standard Edition, Deluxe, Expander 11.0.2; SnapNDrag 2.1.2; RBrowser 4.3.8; more
StuffIt Deluxe 11.0.1 released: Fixes numerous bugs
StuffIt 11.0 (#2): Unexpected quits, crashes -- fixes; more