I amgoing to get my DR1000S next week. Don't familiair with it yet, but it will be a new tools for my students in embedded system class.
for my personal use,
1. Port of TI, HP Graphic Calculator would be good. Most of them has Linux source code for Ti-92, HP48.
2. Contacts sync wirh Outlook or Windows Live
Just start from this....
When I am ready I would contribute (my students) to develope SW also.