The best replacement for mq is jms.

The best alternatives to mq are rated as following:
★★★★★  jms
★★★★★  tibco
★★★★  esb
★★★★  hq
★★★★  web services
★★★★  http
★★  connect direct
★★  msmq
★  activemq
★  rabbitmq
★  message broker
★  qm
★  web service
  ibm mq
  pq
  service integration bus

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

Other search terms related to mq and their ratings are:
★★★★★ datapower
★★★★★ weblogic
★★★★ cics
★★★★ jms
★★★ jms sample
★★ mdb
★ hacmp
You have in mind a companion for mq and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mq in all years. Click on graph for more.
mq
jms
tibco