Introducing Krun.ch, a web application that let you upload and compress your files on-the-fly. Krunch also offers option to email the resulting compressed files.
Not only that, but Krunch also lets you upload and uncompress zip,rar and tar gzip archives on the fly. This eliminates the need of a standalone decompression program. You won’t need unrar/rar anymore in order to uncompress rar files.
Krun.ch is relatively new and was developed by Kailash Nadh. The same guy that brought http://splogspot.com and Pingoat.com