i use xBar, which costs a few bucks but i love it. It just gives me no nonsense access to whatever apps are open to switch/kill them, plus it gives a custom launcher. i don't use the scripts and all that, but i know the app has many other powerful features for such a small and compact prog. not sure why more people don't use it, but at least worth a free demo..
http://xetranet.free.fr/xbar2/?lang=...e=Presentation