Newton OS

Newton OS is a mobile operating system developed by Apple Inc. for the Newton platform. It was first released with the original MessagePad in August 1993. Version 2.1 was the final release in March 1997 and the product line was discontinued in February 1998.

Version history

 * 1.0 — August 3, 1993
 * 1.1 — October 30, 1993
 * 1.2 — March 4, 1994
 * 1.3 — October 1, 1994
 * 2.0 — March 14, 1996
 * 2.1 — March 21, 1997