Vba_webos is a project mainly written in C++ and C, it's free.
VisualBoyAdvance for WebOS
This is a port of VisualBoyAdvance.
Original source is available here: http://vba.ngemu.com/downloads.shtml The source for the port is available here: http://git.webos-internals.org/?p=games/visualboyadvance.git
See http://www.webos-internals.org/wiki/Application:VBA for the latest information on this port.