Just found this awesome website.
It's called
Freeware Home, it has everything you need that is regarded to freeware.
There is also
AlternativeTo which rahmu suggested, these two sites have very good stuff.
As for the ISO mounter I went back to using
Daemon Tools Lite since I couldn't find anything else, it's still pretty good though.
I also found a
FeyWritter. It has almost all of the features Nero Express has and it's only 2MB and very lightweight. You can also find many good stuff from
FeyTools.