Qstarz

[routeconverter]

Ideally I would like an application that reads (and communicates back) direct with the unit.

Well, if you're willing to develop this: I'm accepting patches.

Alternatively somethink that will read the *.poi files that the supplied application writes. (I think they may be in some flavour of SQL Lite)

Do you have examples for these files? I had a longer discussion with someone that wanted to implement support for some SQL Lite-based file format. But it turned out to be very complicated.