There's a great overview of the components and features of Oracle Solaris Studio compilers and tools now available in HTML and PDF:
»Oracle Solaris Studio Overview - HTML - PDF
Oracle Solaris Studio provides everything you need to develop C, C++, and Fortran applications to run in Oracle Solaris 10 on SPARC or x86 and x64 platforms, or in Oracle Linux on x86 and x64 platforms. The compilers and tools are engineered to make your applications run optimally on Oracle Sun systems.
In particular, Oracle Solaris Studio tools are designed to leverage the capabilities of multicore CPUs including the Sun SPARC T3, UltraSPARC T2, and UltraSPARC T2 Plus processors, and the Intel® Xeon® and AMD Opteron processors. The tools allow you to more easily create parallel and concurrent software applications for these platforms.
The components of Oracle Solaris Studio include:
IDE for application development in a graphical environment. The Oracle Solaris Studio IDE integrates several other Oracle Solaris Studio tools and uses Oracle Solaris technologies such as DTrace.
C, C++, and Fortran compilers for compiling your code at the command line or through the IDE. The compilers are engineered to work well with the Oracle Solaris Studio debugger (dbx), and include the ability to optimize your code by specifying compiler options.
Libraries to add advanced performance and multithreading capabilities to your applications.
Make utility (dmake) for building your code in distributed computing environments at the command line or through the IDE.
Debugger (dbx) for finding bugs in your code at the command line, or through the IDE, or through an independent graphical interface (dbxtool).
Performance tools that employ Oracle Solaris technologies such as DTrace can be used at the command line or through independent graphical interfaces to find trouble spots in your code that you cannot detect through debugging.
These tools together enable you to build, debug, and tune your applications for high performance on Oracle Solaris running on Oracle Sun systems. Each component is described in greater detail later in this document.