As I mentioned earlier when talking about Window Maker, I've been hoping to find time to get some other window managers packaged up for Solaris.
OK, so Enlightenment packages are available. Just to be clear, these are e16, not some cut of the current development branch. (I'm having a look at the EFL beta, trying to get it to work on Solaris.)
As with wmaker, these packages should install fine on Solaris 10 (some reasonably current update, anyway) and OpenSolaris/OpenIndiana. They should appear as session options on the login screen, and they should basically work. But this isn't something I use extensively, and there are almost certainly rough edges.
The packages include imlib2, e16, libast, Eterm, and themes. They all go together, so there's just the one package. This all installs directly into /usr, which is fine as there aren't any conflicts with anything that ships with Solaris.
While I like playing with shiny toys such as enlightenment, I never really got on with it - the behaviour was always slightly interesting, and I found the themes overly fussy, And speaking of themes, a whole bunch of themes for e16 are available, and a lot of those are quite polished.