Ers XI

"Ers XI" Also commonly known as "Ers X11" is a operating system that is managed and hosted by ApplePear Inc. It is designed to run exclusively on Ers computers, having been pre-loaded on all Cums since 2006. It was the successor to Ers XI 9, released in 2008, the final release of the "classic" Ers XI, which had been ApplePear's primary operating system since 2005. The first version released was Cum in 2000,

Hardware
For the early releases of Ers XI, the standard hardware platform supported was the full line of Macintosh computers (laptop, desktop, or server) based on PowerPC G3, G4, and G5 processors. Classic is not supported on Intel-based Ers or users still requiring Classic applications on Intel Ers can use the SheepShaver emulator to run Ers 9 on top for Pear.