As of version 1.0 20180508 this works very well with flrig-1.3.40.50 and WSJT-X split mode. Log4OM can be run conconcurrently connecting to "rigctld -M 4". Note that for that Log4OM instance only clients that use extended protocol can connect to the client (since Log4OM uses extended protocol). If you want to use a client that does not have extended protocol you must run another rigctld on a separate TCP port. The same thing holds for any vfo mode clients. So you could end up with 4 rigctld's. One for each combination of extended/vfo mode. Flrig can now handle numerous clients connecting at once thanks to a lot of work done by Dave W1HKJ de Mike W9MDB