ILOG CPLEX 11.1 is supported by Unix and Windows platforms.

Unix Platforms

Machine: HP PA-RISC
OS: HP-UX 11.x
C++ compiler: HP aC++ A.03.73
Java: JDK 5.0, 6.0

Machine: HP PA-RISC
OS: HP-UX 11.x
C++ compiler: HP aC++ A.03.73 (64-bit)
Java: JDK 5.0, 6.0

Machine: Intel IA-64 processor family (Itanium)
OS: HP-UX 11i (v2 and v3)
C++ compiler: HP aC++ A.06.17 (64-bit)
Java: JDK 5.0, 6.0

Machine: Intel IA-64 processor family (Itanium)
OS: SUSE Linux Enterprise Server 10.0
C++ compiler: g++ 4.1 (64-bit)
Java: JDK 5.0

Machine: IBM Power architecture
OS: AIX 5.2, 5.3, 6.1
C++ compiler: IBM XL C/C++ 7.0, 8.0
Java: JDK 5.0, 6.0, static_stl only

Machine: IBM Power architecture
OS: AIX 5.2, 5.3, 6.1
C++ compiler: IBM XL C/C++ 7.0 , 8.0 (64-bit)
Java: JDK 5.0, 6.0, static_stl only

Machine: SUN UltraSPARC
OS: Solaris 9, 10
C++ compiler: Sun Studio 8, 9
Java: JDK 5.0, 6.0

Machine: SUN UltraSPARC
OS: Solaris 9, 10
C++ compiler: Sun Studio 8, 9 (64-bit)
Java: JDK 5.0, 6.0

Machine: x64 (aka AMD64, Opteron, EM64T, ia32e)
OS: Solaris 10
C++ compiler: SUN Studio 11 (64-bit)
Java: JDK 5.0, 6.0

Machine: x86
OS: Debian 4.0 Red Hat Enterprise Linux 5.0 (AS, ES, WS)
SUSE Linux Enterprise Server 10.0
C++ compiler: g++ 3.4, 4.1
Java: JDK 5.0, 6.0

Machine: x86-64 (AKA AMD64, Opteron, EM64T, ia32e)
OS: Debian 4.0 Red Hat Enterprise Linux 4.0, 5.0 (AS, ES, WS)
SUSE Linux Enterprise Server 10.0
C++ compiler: g++ 4.1 (64-bit)
Java: JDK 5.0, 6.0

Machine: x86-64 (AKA AMD64, Opteron, EM64T, ia32e)
OS: Debian 4.0 Red Hat Enterprise Linux 4.0, 5.0
SUSE Linux Enterprise Server 10.0
C++ compiler: g++ 3.3 (64-bit)
Java: JDK 5.0, 6.0

Machine: x86
OS: Mac OS X 10.4 (aka Darwin 8)
C++ compiler: g++ 4.0 (32-bit)
Java: JDK 5.0

Windows Platforms

Machine: x86
OS: Windows XP, Server 2003, Vista
C++ compiler: Microsoft Visual Studio 2005
.NET: Framework 2.0, 3.0, 3.5
Java: JDK 5.0, 6.0

Machine: x86
OS: Windows XP, Server 2003, Vista
C++ compiler: Microsoft Visual Studio 2008
.NET: Framework 2.0, 3.0, 3.5
Java: JDK 5.0, 6.0

Machine: x64 (aka AMD64, Opteron, EM64T, ia32e)
OS: Windows XP x64, Server 2003 (64-bit), Vista (64-bit)
C++ compiler: Microsoft Visual Studio 2005 (64-bit)
.NET Framework 2.0, 3.0, 3.5
Java: JDK 5.0, 6.0

Machine: x64 (aka AMD64, Opteron, EM64T, ia32e)
OS: Windows XP x64, Server 2003 (64-bit), Vista (64-bit)
C++ compiler: Microsoft Visual Studio 2008 (64-bit)
.NET Framework 2.0, 3.0, 3.5
Java: JDK 5.0, 6.0

Note: Many vendors have operating system and compiler versions that are different from the ones listed above. In some cases they are compatible with the compilers listed here. See the vendor's technical support for compatibility details.