Builds of SheepShaver are available for Mac OS X, Windows and Linux. Using SheepShaver (along with the appropriate ROM image) it is possible to emulate a PowerPC Macintosh computer capable of running Mac OS 7.5.2 through 9.0.4.

System 7 also included AppleTalk networking and file sharing software in the form of system extensions and control panels. SheepShaver is an open source PowerPC Apple Macintosh emulator. PowerPC Macintoshes included Graphing Calculator. Engst's Internet Starter Kit for Macintosh. Since System 7 was introduced before the Internet came to popular attention, software such as MacTCP, FreePPP and Netscape were not included at first, but was later available on disk from Internet service providers and bundled with books such as Adam C. Later, the Macintosh Performa series added various software bundles including third-party software such as ClarisWorks, The New Grolier Multimedia Encyclopedia, Microsoft Bookshelf, Spectre VR and Power Pete. Newly purchased Macintosh computers had System 7 installed and were often bundled with software such as HyperCard, At Ease and Mouse Practice.

Unlike earlier systems, System 7 itself did not come bundled with major software packages. System 7 was the first Apple operating system to be available on CD, although it shipped on a set of 15 floppy disks initially.

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