Endeavors Technology, part of Tadpole Technology, itself best-known for its Sun Sparc-based notebooks, has ported its Magi Embedded peer-to-peer software over to Windows CE running on Compaq's PDA.Go Gnutell it on a mountain. They include links so you can download the P2P software.
Magi is a Gnutella-style file-sharing system designed to hook up any number of machines across the Internet and other networks to facilitate collaborative computing. Magi is based around what Endeavors calls a "thin server", itself derived from Apache, the open source Web server. Effectively Magi turns any Net connected machine - from WAP phones to PDAs to Net appliances to PCs - into a Web server.