There are 2 repositories under xnl topic.
A C# client to handle MotoTrbo including native wire line communication, LRRP, and TMS
Motorola MotoTRBO DMR protocols research project.
Motorola XCMP/XNL Dissector for Wireshark
Motorola XCMP/XNL/LRRP/ARS develop
A go interface to talk to mototrbo repeaters