Linux/Solaris/MAC X script installer
I been using NSIS a while and really love it. I see a lot of request for other platform based scriptable installers. There is one that only works with Linux/Solaris/MAC X. I use NSIS for windows and the one below for the rest of the platforms. It is a scriptable (list) based installer and is also open source.
http://www.easysw.com/epm/