Source code:

  1. Illumos_gate -
  2. X11 -
  3. Package Manager/IPS -
  4. Caiman Installer -
  5. OI-userland -
  6. JDS/GNOME -
  7. SFE - svn co spec-files-extra 

Binary Packages:

Distribution Snapshots (i.e. Get Hip!):

Oracle Solaris 11 System Administration
OpenSolaris Bible 
Pro OpenSolaris
Solaris Internals: Solaris 10 and OpenSolaris Kernel Architecture
Solaris Performance and Tools: DTrace and MDB Techniques for Solaris 10 and OpenSolaris

Solaris Troubleshooting Handbook: Troubleshooting and Performance Tuning Hints for Solaris 10 and OpenSolaris

DTrace: Dynamic Tracing in Oracle Solaris, Mac OS X and FreeBSD (Oracle Solaris Series)
OpenSolaris for users, administrators, and data centers: the first steps to productive operation on SPARC, PC and PowerPC-based platforms