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A Macintosh clone is a personal computer made by a manufacturer other than Apple Computer, using (or compatible with) Apple Macintosh ROMs and system software.

Background

The Apple II and IBM PC computer lines were "cloned" by other manufacturers who had reverse-engineered the minimal amount of firmware in the computers' ROM chips and subsequently legally produced computers that would run the same software. These clones were seen by Apple as a threat, as Apple II sales had presumably suffered from the competition provided by Franklin Computer Corporation and other clone manufacturers, both legal and illegal. At IBM, the threat proved to be real: most of the market eventually went to cloners like Compaq, Dell, Gateway, Hewlett-Packard, and dozens of smaller companies, and in short order IBM found it had lost control over its own platform. Undaunted by this setback, though, IBM soldiered on for years. The company's attempts to set standards were usually rejected by the market in favor of lower-cost technologies available from multiple vendors (for example, Micro Channel lost out to EISA and later to PCI). Power has never been this much fun.