Quantum Link (or Q-Link) was a U.S. and Canadian online service for Commodore 64 and 128 personal computers that operated from November 5, 1985, to November 1, 1995. It was operated by Quantum Computer Services of Vienna, Virginia. In October 1991 they changed the name to America Online, which continues to operate the AOL service for the IBM PC and Apple Macintosh today. Q-Link was a modified version of the PlayNET system, which Control Video Corporation (CVC, later renamed Quantum Computer Services) licensed.
Q-Link featured electronic mail, online chat (in its People Connection department), public domain file sharing libraries, online news, and instant messaging (using On Line Messages, or OLMs). Other noteworthy features included online multiplayer games like checkers, chess, backgammon, hangman and a clone of the television game show “Wheel Of Fortune” called ‘Puzzler’; and an interactive graphic resort island called Habitat while in beta-testing and later renamed to Club Caribe.