Ted Kaehler

He is most noted for his contributions to the programming languages Smalltalk, Squeak, and Apple Computer's HyperCard system,[1] and other technologies developed at Xerox PARC.

By the 1980s, he was reportedly demonstrating a virtual reality (VR) technology that involved a user in Maze War 3D game.

[5] Kaehler was part of a group led by Dr. Alan Kay who refined the concept of network computing through Smalltalk.

According to Kay, along with Ingalls, Dave Robson, and Diana Merry, for instance, Kaehler successfully implemented the Smalltalk-76 system from scratch within a period of seven months.

[7] Kaehler was also credited for designing the virtual memory system named Object-Oriented Zoned Environment (OOZE).

Kaehler also co-authored a book, A Taste of Smalltalk, with University of California, Berkeley professor David Patterson,[9] future leader of the RISC-V movement.

[12] Kaehler also became part of the open-source software community-supported Squeak Central Team in 1996, which also included Ingalls, John Maloney, Scott Wallace, and Andreas Raab.

Squeak was developed as an open and highly-portable language that is written fully in Smalltalk and included the EToys system, which allows children to see the software operation.

[15] Kaehler was credited for writing the code of the platform's painting system, Squeak Paintbox, and other EToys pilot versions.