Early installations used mainly LocalTalk (and more recently Ethernet), but any physical medium could be used which could be directly or indirectly connected to an AppleShare server system.
Equivalent third-party server products include the open-source Netatalk suite on Unix-like systems, and Services for Macintosh on Microsoft Windows NT and 2000.
Versions of Mac OS from System 7 onwards included Personal File Sharing, which is a more limited AFP implementation.
The most obvious difference between Personal File Sharing and AppleShare is that the former supports only a small number of concurrent remote users.
Apple discontinued the AppleShare product line following the release of macOS Server, which provides equivalent functionality.