Codefenix (conchaos.synchro.net) known for a number of great BBS mod's has released MRC (Multi Relay Chat) for Synchronet BBS. You can grab a copy on Synchronet's GIT here: https://gitlab.synchro.net/main/sbbs/-/tree/master/xtrn/mrc?ref_type=heads

https://gitlab.synchro.net/main/sbbs/-/tree/master/xtrn/mrc?ref_type=heads