SheepShaver allows users to run Mac OS Classic under Snow Leopard

Leading up to the release of Mac OS X back in 2001, many users were worried about compatibility with Mac OS 9 and below. Mac OS X was completely different from its predecessors, and only some Mac OS 9 applications that were “Carbonized” would run natively in Mac OS X. For those who have legacy applications that need to be used, there are two possible solutions: buy an old Mac or try SheepShaver.