its a plugin for Photoshop, i think its what the photographer Dave Hill uses. Basically it does what Photomatix does with a single Raw file but IMO and a lot of other's opinions it does it a lot better.
[link]that shows you some of the results from it.
Its not free but i found a torrent of it, so try torrentz.com if u havnt got any money (if its not there, message me and ill send u it if u want it)
xo