OSx86 (from the names OS X and x86) is a collaborative hacking project to run the mac OS operating system on non-Apple personal computers with x86 architecture on x86-64 processors.
The effort started soon after the June 2005 Worldwide Developers Conference announcement that Apple would be moving its personal computers from Power PC to Intel microprocessors.
In June, the hackers released the 10.4.7 update for non-Apple computers using the 10.4.4 kernel.
Up to the release of the 10.4.8 update, all OSx86 patches used the 10.4.4 kernel with the rest of the operating system at version 10.4.8.
A hacker by the handle of Brazil Mac created one of the earliest patching processes which made it convenient for users to install .
Within hours of Leopard's release, an AMD/Intel SSE2/3 Kernel Patcher was created which removed the HPET requirement from an original untouched mach_kernel file, a core component of the Mac OS.
When "Snow Leopard" was released, Russian hacker netkas created a version of Chameleon which can boot Mac OS X v10.6.
Efforts immediately began to attempt to run Mac OS X on non-Apple hardware, but developers quickly found themselves with an error message saying that the PC hardware configurations were not supported.
10.4.4 with the first generation of Intel-based Macs, the i Mac and the Mac Book Pro.