DS Vista by Filou HB is an early shell application for Nintendo DS featuring a Windows Vista theme. A french changelog can be found on it's official page. Read more about DS Vista v3 (NDS Application)
DSx86 is a PC/DOS emulator for Nintendo DS written by Patrick Aalto. It's purpose is to allow you to run old DOS games on your Nintendo DS game console. Some of the older games run quite good and bring back memories. Read more about DSx86 v0.40 (DOS emu for NDS)
jdl has been working for ages on a Boulder Dash style game featuring Dexter from Dexter's Laboratory. Dexter's Labyrinth is not yet complete, but partially playable, as few gameplay elements are still missing. Read more about Dexter’s Labyrinth (17-11-2011) (NDS Game)
Developer fincs is currently working on FeOS, an open source OS for Nintendo DS. Currently FeOS supports loading relocatable code, basic console I/O, ARM7 code loading support and a native libnds-based DS video API. Read more about FeOS (WIP 1) (NDS OS)
NightFoxรขโฌโขs Lib is a library written in C, based on libNDS of devkitArm. NightFoxรขโฌโขs Lib library contains functions witch making the use of backgrounds, sprites and collision maps easier. Read more about NightFoxs Lib (08-11-2011) (NDS misc)