Hack Installer System. I developed it, mostly since I needed an installer for all my hacks, and standardizing it is usually A Good Thing.
Basically, as far as I know, there are two installer systems released at vB.org (although I am sure I remember one more not released here). That is the HTL (Hack Tracking Log) developed by Kura, and the HIS (Hack Installer System). The HTL was basically made useless at vB.org since it requires an installation. Therefore, it is required to have an installation not relying on the installation of another hack. It is this fact that I made the HIS.
The HIS needs one database table and that is it, and it creates itself when it is ran the first time, requiring no installation at all. I also have allowed hack authors to package the files for the HIS with their hack. Because of this, it meets vB.org requirements.