nds4droid v44 is released. nds4droid is a free, open source Nintendo DS emulator for Android based on DeSmuME. It is currently in it's infancy but does support most of the features one would expect in an emulator.

nds4droid v44 Changelog:

Minor performance enhancements Added a setting to disable the auto-scanning ROM browser (default to the old file browser)

Download: nds4droid v44
Source: Here