Linux Journal takes a look at Alien, a utility to convert one package type into another

Sometimes, a utility or an application that you want to install is impossible to find in the format of your distribution. Alien is a utility that can convert one package type into another. It can get you out of a fix when you can't find a package for your distribution, and it is also useful for package maintainers who want to distribute packages for distributions that they don't run. It can work with Slackware, Debian and RPM packages as input and output types.

Alien - Use Any Package On Any Distribution