PsionResources for the classic range of Psion PDAs
I have owned and used Psion computers since 1996: Siena, 3mx, 5mx, Revo Plus, Series 7, and netBook.
Around 14 years ago I started to collect information about using and programming Psion computers on my website.
Here are some useful resources:
This site is currently offline, while I decide what to do with it. Sorry.