- CHM received permission from Apple to release the Lisa software source code, including system and applications software, celebrating the computer's 40th birthday.
- The Apple Lisa, released in 1983, was the first GUI-based personal computer from Apple and a direct precursor to the Macintosh.
- Lisa's development was influenced by Xerox PARC's GUI innovations, including the WIMP paradigm (windows, icons, menus, pointer).
- Despite its innovative multitasking operating system and suite of bundled applications, the Lisa failed commercially due to its high price ($9,995) and sluggish performance.
- The Macintosh, released in 1984 at a lower price, became successful thanks to desktop publishing and college marketing, leading to the widespread adoption of GUIs.
- Lisa's GUI concepts inspired PC software shells like VisiOn, GEM, and Microsoft Windows, shaping modern personal computing interfaces.