The Oracle Solaris Studio, formerly named Sun Studio, Sun WorkShop, Forte Developer, and SunPro Compilers, is a compiler suite which is Oracle Corporation's flagship software development product for the operating systems Solaris and Linux.
The Oracle Solaris Studio software delivers optimizing compilers for C, C++, and Fortran, libraries, and performance analysis, and debugging tools for Solaris on SPARC, and both Solaris and Linux on x86/x64 platforms, including multi-core systems.
There are many security and functionality patch updates which are only available with a support contract from Oracle.
Site: http://www.oracle.com/technetwork/server-storage/solarisstudio/overview/