IBM XL C for AIX
Available as a separate orderable product, or as an included component of XL C/C++ for AIX

IBM XL C/C++ for AIX
A highly advanced optimizing compiler for the AIX operating system, runs on IBM Power Systems supported by AIX V5.3, AIX V6.1 and IBM i V6.1 PASE

IBM XL C/C++ for Linux
Supports Red Hat Enterprise Linux and SUSE Linux Enterprise Server 10 SP2 on a range of IBM Power Systems and IBM BladeCenter servers

ILE C/C++ in WDS for IBM i
Part of the IBM WebSphere® Development Studio for System i ILE Compilers feature, which now also includes the ILE COBOL and ILE RPG compilers, and the Application Development ToolSet

XL C/C++ for z/VM
Brings a highly productive and powerful object-oriented development environment to z/VM programmers

z/OS XL C/C++
Allows you to produce high-performing z/OS-based C/C++ programs providing optimized business software solutions

IBM XL C/C++ Advanced Edition for Blue Gene
Compilers which exploit, optimize, and tune applications for IBM's Blue Gene/L and Blue Gene/P supercomputers

IBM XL C/C++ for Multicore Acceleration for Linux
Gives application developers the tools to exploit Cell Broadband Engine Architecture greatly accelerating numerically intensive, highly graphical, and streaming applications in a variety of industries