Unfortunately there are not that many Psion pages left on the we-we-we :-) But I did find some. Here they are:
Java Psion Link (JPL), is intended to be a cross-platform solution for transferring files between Psion Epoc PDAs (netBook, series 7, 5Mx, revo) and any computer with a serial port and the ability to run java.
Bioeddie's Psion Pages...
Emulates almost any model of Psion II, with packs and snapshot functionality.
Connecting Psion palmtop (either Series 3 or Series 5) to a Linux-based PC without using CF card. Just a PC-Link cable.
And this is an amazing link to an amazing project called The Psion Bluetooth Keyboard project. Interested? I thought so :-) Here's the link: