From GameBrew - a wiki dedicated to Video Game Homebrew.
Dana O.S. (Spanish) is a homebrew with multiple applications that you can edit text (feature yet to be developed), explore microSD files, use a paint like application and even use DS as a flashlight.
It is part of the Scenery Beta 2010.
List of applications:
- Flashlight - Press the screen and start at once.
- Paint - Start normal.
- Fat - Start but is a little buggy.
Operate with Stylus.
Tested on EX4i (firmware 1.30).