[Ulti]

I'd say most netbooks or tablets replaced it for all of those things now... But you're right that Psion were super innovative. More important than their series 5 hardware was the operating system. EPOC was a 32bit embedded OS long before anyone else was doing them. It was nice to program for and dealt with multiprogram which even the first iPhones didn't think about.

[pavlov]

32-bit EPOC became very popular (for a while) as Symbian, but the "nice to program for" aspect was definitely lost in Symbian's heavy-handed multi-vendor committee approach to software design.