Mono is a cross platform, open source .NET development framework.
The Mono Project aims to make developers productive and happy: Mono 2.4 is our gift to the world. Sponsored by Novell, the Mono open source project has an active and enthusiastic contributing community and is positioned to become the leading choice for development of Linux applications.
Mono has support for both 32 and 64 bit systems on a number of architectures as well as a number of operating systems.
Supported Operating Systems
Operating Systems
* Linux
* Mac OS X, iPhone OS
* Sun Solaris
* BSD - OpenBSD, FreeBSD, NetBSD
* Microsoft Windows
* Nintendo Wii
* Sony PlayStation 3
Supported Architectures
Mono has both an optimizing just-in-time (JIT) runtime and a interpreter runtime. The interpreter runtime is far less complex and is primarily used in the early stages before a JIT version for that architecture is constructed. The interpreter is not supported on architectures where the JIT has been ported.
Supported Architectures Runtime Operating system
s390, s390x (32 and 64 bits) JIT Linux
SPARC (32) JIT Solaris, Linux
PowerPC JIT Linux, Mac OSX, Wii, PlayStation 3
x86 JIT Linux, FreeBSD, OpenBSD, NetBSD, Microsoft Windows, Solaris, OS X
x86-64: AMD64 and EM64T (64 bit) JIT Linux, Solaris
IA64 Itanium2 (64 bit) JIT Linux
ARM: little and big endian JIT Linux (both old and new ABI), iPhone
Alpha JIT Linux
MIPS JIT Linux
HPPA JIT Linux
Note that the Alpha, MIPS, ARM big-endian and HPPA architectures are community-supported and may not be as complete as the other architectures.
Support for SPARC64 works in older versions of Mono, but not in the recent versions.
Packages for most platforms are available from the Downloads page.
http://www.go-mono.com/mono-downloads/download.html