This isn't strictly software for running on NIT's, but it can build software for NIT's so I think many of you might be interested.

Illumination Software Creator 2.0 (for Linux, MacOS X and Windows desktops) is now available.

It is a 100% visual software development tool aimed at making the creation of software approachable to everyone (even those with no programming experience) through the use of visual "building blocks".

The resulting software that you create is Python/GTK, and there's even a "Maemo/Tablet" setting for making your UI custom tailored to the devices. (It also can build Flash/Flex rich internet apps.)

Take a look here: http://radicalbreeze.com/
The support forum (including the beta releases) are here: http://radicalbreeze.com/forum/

Update:
Version 3.0 is now out and can now build apps for Android and iOS (in addition to Maemo).

Update:
Version 4.1.1 is available now. Total list of platforms ou can build apps for (from a single visual project):
- Maemo (N810, N900)
- Desktop GTK/Python
- iOS
- Android
- Flash/Flex Web apps
- HTML5 web apps

And we've never charged an upgrade fee.