Newton MessagePad 2x00 (1997)
The final incarnation of the Newton OS came packaged in the MessagePad 2100, an internet-ready, heap-increased version of the MessagePad 2000. The 161.9Mhz StrongArm processor, which Palm is just beginning to port PalmOS to in 2002, is the true reason the Newton 2X00 line is still one of the more functional PDAs of these days.
When the MP2K was first released in 1997, unlike the PalmPilot, they were meant to work to laptop functionality rather than act as a digitized datebook. This means that you can browse the Web in full grayscale (and perhaps Javascipt), number crunch on spreadsheets, use graphing calculators, wordsmith in a functional word processor, and so on. Movies have been made to run on Newtons and Mp3 syncing with iTunes has been implemented.