Available here --> http://byuu.org/?page=bsnes&bg=3 This release adds emulation of the GBA. Unfortunately the source code archive is in an unknown format and cannot be opened. The binary is fine though.
http://mess.redump.net/downloads Note that the standard main menu will freeze solid, if you scroll off the start or end (this is a bug carried over from MAME). The command line or a front end is ok.
This one has a considerable number of bugs... it may be worthwhile waiting for the next release. The source patch is here --> http://mamedev.org/updates.html
Agat-emulator 1.23 was released recently, get it at http://sourceforge.net/projects/agatemulator/files/ It emulates Apple2 and compatibles. DeSmuME 0.9.8 has been released, get it at http://desmume.org/download/ It emulates the Nintendo DS.