thx F@re for posting FileManCE so I could investigate what's running and see for yourself:
Nav N Go iGO 8 is running as it was written for the Triton. It's a streetrouting program.
OziExplorer CE is also running. You can convert nearly every raster map with "Image to Ozf"

Since my CE knowledge is very limited I came up with a quick solution until I know how to make a graphical menu like the beautiful from frotna I've seen

Can you have street maps and topo maps loaded into the sd card at the same time and select which map?

look at Total Triton 1500 mod

The device is virtualy open to every software that was written for WinCE devices... the reality is just a matter of time!