Android-x86 is a tool that allows you to port Android to the x86 platform.
To begin with, it needs to be mentioned that the utility was known as 'patch hosting for android x86 support' before. It was designed in such a way that developers could host different patches for android x86 support, however, they moved on and created a code base that provided support on different x86 platforms.
The software can be installed on hard disks supporting such file systems as EXT3, EXT2, NTF, and FAT32. What is more, Android-x86 can also be installed to an NTFS file system to co-exist with Windows.
Nevertheless, it needs to be pointed out that the tool lacks stability and reliability. The fact is that in case you wish to have all of your Google applications and settings on the same foothold across all the devices, the utility cannot provide it yet.
To sum everything up, it is safe to say that Android-x86 is a tool designed to port Android to the x86 platform.