Quantum retained rights to the AppleLink Personal Edition software, and released a version for both the Mac and Microsoft Windows machines in 1989, calling the new service America Online as Apple owned the AppleLink name. In 1991 the service had grown substantially, and the company was renamed as America Online Inc. The original AOL Macintosh software still retained within it vestiges of its GEIS/AppleLink heritage. It was not lost on GEIS engineers that it included a version of their proprietary EF3 protocol which was never Apple's intellectual property to share with Quantum. It was handed over anyway as part of the Macintosh source code, thanks to John Sculley, Apple's CEO at the time. Although no legal action was ever pursued, this further soured the technical relationship between GEIS and Apple in the final years of AppleLink, especially since by then AOL was competing with GEIS' own consumer service, GEnie. As a result, when GEIS developed the improved EFX and upgraded AppleLink, it never released source code to Apple, supplying only a copyrighted code-resource for the protocol.