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  The OS X Center

OS 9 Helper
OS 9 Helper Apple stopped at OS 9.1 for your Mac? Let OS 9 Helper let you move up to OS 9.2.2!
Run OS X On "Unsupported" Macs
Use the latest OS X and/or OS 9 versions on your Mac - even if Apple® doesn't support it.
XPostFacto Run OS X 10.1.x, 10.2.x, 10.3.x, & now up to OS X 'Tiger' 10.4.11 on Macintosh models that Apple is no longer supporting.