My friend Simon at Goo Software recently needed to open a zip file on his iPhone, view it contents and send one of the files to someone else. A simple task you would think, but upon finding that there were no decent solutions available on the App Store, he did what any self-respecting iOS developer would do - made one himself!
The result is Zippity, the easiest way to handle zip files on your iPhone!
Preview contents, send via email, open in other apps on your iPhone. For a mere 69p it also supports .tar, .tar.gz, .gz as well as .zip.
Buy Zippity on the App Store