The best replacement for msmq is service broker.

The best alternatives to msmq are rated as following:
★★★★★  service broker
★★★★★  wcf
★★★★  websphere mq
★★★★  ibm mq
★★★★  rabbitmq
★★★  service bus
★★★  sql service broker
★★★  activemq
★★  biztalk
★★  mqseries
★★  jms
★★  nservicebus
★  named pipes
★  zeromq
  mq series

Your alternative for msmq is not listed? Suggest!
Speaking about msmq, one probably shouldn't forget about wcf.

Other search terms related to msmq and their ratings are:
★★★★★ wcf
★ biztalk
You have in mind a companion for msmq and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of msmq in all years. Click on graph for more.
msmq
service broker
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