We doubt anyone still are using them but they were popular back in mid 90's. This webpage are keept for it's historical value :). If you are interested you can read the history about the PalmPilot over at Wikipedia

The PalmPilot is a small handheld PDA by 3COM and this program lets your PalmPilot communicate with other nodes on a S.N.A.P network or modem via it's serial port.

Picture to the left shows a PalmPilot Pro (approx. size is 120 x 78 x 16 mm).

The other node could be a microcontroller, PC etc. running the S.N.A.P network protocol. See our SNAP-026.ZIP for a simple example connecting the PalmPilot to a BASIC Stamp II (BS2-IC) from Parallax, Inc.

Download S.N.A.P Serial for PalmPilot [Version 0.52 ß]