GNU Source Installer
The traditional way of installing the software on *NIX is from source. To install any software, you should download the sources, compile them and install them. But with the introduction of the package management systems from different Linux and other UNIX variant distributors, the source install method is almost deprecated. But still, there are some softwares that are not available in the packaged form (like rpm, deb, gz, etc.). They are available only as source tar balls. Maintaining the source installation is always a pain and you can't keep track of it as powerfuly as the packaging systems. GNU Source Installer is out here for solving all these problems.