Mihai Parparita's Infinite Mac project uses WebAssembly to emulate classic Mac and NeXT operating systems directly in modern browsers, offering instant access to versions like System 6 through Mac OS 9. By integrating engines like Mini vMac and SheepShaver, it transforms legacy software into a shareable web experience, showcasing the power of portable emulation. This initiative not only preserves computing history but also demonstrates how WebAssembly can democratize access to vintage systems for developers and enthusiasts alike.