For action bars i myself use Bartender3, but theres Bongos2, Trinity Bars 2 and more, Just go to download section on this site, in the stand-alone add-ons there's a setion called "Bar mods" check it out and see what fits you.
Again for unitframes i use Pitbull, it's a bit of a memory hog but has loads of options which i like, so for now i'll have to live with the memory usage
. But as before there is plenty to choose from in "Unit mods" section in downloads.
Might have to go to
Code:
http://files.wowace.com/
to get pitbull if you want to try it out, other addons for unit frames there too, but keep in mind it does say it's beta versions there.
Hope you find something you like