I've just setup the start of a PAM page on OpenSolaris.org as part of the OpenSolaris security community.
I started with some of the PAM modules that I've had sitting in my home directory. I was interesting, for me, to see that I wrote some of these about 9 years ago. I've released these under the CDDL.
If other community members have modules they would like to contribute then send me the code and a description and I'll put them up there.
Note that there is no commitment that these modules will appear in any future release of Solaris or any other OpenSolaris based distro, but there is also nothing stopping distro makers from doing so.