This software connects to D-STAR, DMR, Fusion, NXDN, P25, M17 reflectors and AllStar nodes via IAX over UDP. It uses open source vocoder software for all digital modes, and requires no AMBE hardware or silly remote AMBE servers. Dstar encoding is currently not acceptable for QSOs, so TX has been disabled.
Here's the setup page:
Works great on DMR.