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Networking · head to head

Eclipse Mosquitto vs TIBCO Enterprise Message Service

Eclipse Mosquitto logo

Eclipse Mosquitto

Networking

Small, EPL-licensed MQTT broker that runs on hardware other brokers cannot

From
Free
Rated
-
Full reviewWebsite
TIBCO Enterprise Message Service logo

TIBCO Enterprise Message Service

Databases

JMS message broker underpinning bank and telecom estates, now maintained rather than expanded

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Eclipse Mosquitto has a free tier, so it costs nothing to try first.
  • Each has a real cost: Eclipse Mosquitto there is no clustering: Mosquitto is a single process, so high availability means building your own failover and accepting session loss on switchover.; TIBCO Enterprise Message Service the 2026 roadmap is oriented to modernising existing estates rather than winning new deployments, so a greenfield buyer is choosing a product its vendor is not investing in for growth.
  • They diverge on capability: Eclipse Mosquitto covers MQTT 5.0 support, TIBCO Enterprise Message Service covers JMS 2.0 broker.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Eclipse Mosquitto and TIBCO Enterprise Message Service actually diverge.

Attributes where Eclipse Mosquitto and TIBCO Enterprise Message Service differ
AttributeEclipse MosquittoTIBCO Enterprise Message Service
Starting priceFreeOn request
Pricing modelOpen source, no licence feequote
Free tierYesNo
PlatformsLinux, Windows, macOS, DockerLinux, Windows, Solaris, AIX, Docker
CategoryNetworkingDatabases

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Eclipse Mosquitto

  • MQTT 5.0 support
  • Very small footprint
  • Bridging
  • WebSockets listener
  • Command line clients
  • Dynamic security plugin

Only in TIBCO Enterprise Message Service

  • JMS 2.0 broker
  • Fault tolerant pairs
  • Server routing
  • Rendezvous and FTL bridging
  • Kafka transport
  • Multiple client languages
  • FIPS 140-3 compliance
  • Central administration

What people use each for

The jobs each tool is most often brought in to do.

Eclipse Mosquitto

  • A home or building automation stack where the broker must run on the same small computer as everything elsenot TIBCO Enterprise Message Service
  • An industrial gateway that buffers local telemetry and bridges selected topics to a cloud brokernot TIBCO Enterprise Message Service
  • Local development and testing of MQTT clients without provisioning a cloud IoT servicenot TIBCO Enterprise Message Service
  • An air-gapped deployment where a broker with no licence server and no phone-home behaviour is a requirementnot TIBCO Enterprise Message Service

TIBCO Enterprise Message Service

  • A bank with thousands of JMS applications deciding whether to renew maintenance or fund a migrationnot Eclipse Mosquitto
  • An organisation needing a JMS broker bridged to both TIBCO Rendezvous and Apache Kafka during a phased modernisationnot Eclipse Mosquitto
  • A telecom operator with fault-tolerant messaging requirements already standardised on the TIBCO stacknot Eclipse Mosquitto
  • A regulated deployment requiring FIPS 140-3 validated cryptography in the messaging layernot Eclipse Mosquitto

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Eclipse Mosquitto

  • There is no clustering: Mosquitto is a single process, so high availability means building your own failover and accepting session loss on switchover.
  • Persistence is a local file rather than a replicated store, so a disk failure or an unclean shutdown can lose retained messages and queued QoS traffic.
  • Practical capacity is a few thousand concurrent clients on typical hardware, so a growing device fleet eventually forces a migration to a clustered broker.
  • The Eclipse Public Licence is weak copyleft rather than permissive, which some legal teams treat as a blocker when embedding the broker in a shipped commercial product.
  • There is no commercial support to buy from the project, so production incidents rely on community mailing lists or on paying a third party who happens to know the codebase.

TIBCO Enterprise Message Service

  • The 2026 roadmap is oriented to modernising existing estates rather than winning new deployments, so a greenfield buyer is choosing a product its vendor is not investing in for growth.
  • Nothing is published on price, licensing is per server or per core, and renewal pricing across the Cloud Software Group portfolio has risen sharply since the 2022 Citrix and TIBCO combination.
  • It is a JMS broker, not a durable event log, so replay, stream reprocessing and long retention patterns require Kafka alongside it rather than instead of it.
  • Skills are concentrated in a contractor market that is ageing, and hiring engineers who want to work on EMS is materially harder than hiring for Kafka.
  • Deep integration with the rest of the TIBCO stack, particularly BusinessWorks, makes partial migration difficult; teams commonly find that leaving EMS means replacing several products at once.

Pricing, plan by plan

Eclipse Mosquitto

Free
  • Eclipse MosquittoFree
    • Eclipse Public License 2.0 with Eclipse Distribution Licence
    • MQTT 5.0, 3.1.1 and 3.1
    • No client or message limits beyond your hardware

TIBCO Enterprise Message Service

On request
  • TIBCO Enterprise Message Service$undefined/year
    • Licensed per server or per core with annual maintenance
    • No pricing published at any tier
    • Bundled in TIBCO Messaging and platform agreements

Which should you pick?

Choose Eclipse Mosquitto if

  • You need mqtt 5.0 support.
  • You want to start without paying.
  • You work on Linux, Windows, macOS, Docker.
  • You also want very small footprint.
Eclipse Mosquitto review

Choose TIBCO Enterprise Message Service if

  • You need jms 2.0 broker.
  • You work on Linux, Windows, Solaris, AIX, Docker.
  • You also want fault tolerant pairs.
TIBCO Enterprise Message Service review

Questions people ask

Is Eclipse Mosquitto or TIBCO Enterprise Message Service better?
Neither clearly leads. Eclipse Mosquitto starts at Free and TIBCO Enterprise Message Service at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Eclipse Mosquitto or TIBCO Enterprise Message Service?
Eclipse Mosquitto has a free tier; the other does not. Paid plans start at Free for Eclipse Mosquitto and On request for TIBCO Enterprise Message Service.
Does Eclipse Mosquitto or TIBCO Enterprise Message Service run on more platforms?
Eclipse Mosquitto runs on Linux, Windows, macOS, Docker. TIBCO Enterprise Message Service runs on Linux, Windows, Solaris, AIX, Docker.
Can I use Eclipse Mosquitto for free?
Yes. Eclipse Mosquitto has a free tier, so you can try it without paying. TIBCO Enterprise Message Service starts at On request.
What is Eclipse Mosquitto best used for?
Eclipse Mosquitto is most often used for a home or building automation stack where the broker must run on the same small computer as everything else, an industrial gateway that buffers local telemetry and bridges selected topics to a cloud broker, local development and testing of mqtt clients without provisioning a cloud iot service, an air-gapped deployment where a broker with no licence server and no phone-home behaviour is a requirement. Of those, a home or building automation stack where the broker must run on the same small computer as everything else and an industrial gateway that buffers local telemetry and bridges selected topics to a cloud broker are not what TIBCO Enterprise Message Service is typically brought in for.
What can Eclipse Mosquitto do that TIBCO Enterprise Message Service cannot?
Eclipse Mosquitto covers MQTT 5.0 support, Very small footprint, Bridging, WebSockets listener. TIBCO Enterprise Message Service covers JMS 2.0 broker, Fault tolerant pairs, Server routing, Rendezvous and FTL bridging.

Answered from the vendors’ own pages

Eclipse Mosquitto: Can Mosquitto be clustered?

No. It is a single process. High availability requires an external failover arrangement you build yourself.

TIBCO Enterprise Message Service: Is TIBCO EMS still supported?

Yes, releases continue under Cloud Software Group, with 10.x versions shipping and FIPS 140-3 compliance added.

Eclipse Mosquitto: What licence is it?

Eclipse Public License 2.0 alongside the Eclipse Distribution License, a weak copyleft rather than a permissive licence.

TIBCO Enterprise Message Service: What does it cost?

Nothing is published. It is licensed per server or per core with annual maintenance, usually inside a wider TIBCO agreement.

Eclipse Mosquitto: How many clients can it handle?

A few thousand concurrent connections on ordinary hardware; beyond that, use a clustered broker.

TIBCO Enterprise Message Service: Should a new project choose EMS?

Rarely. The vendor roadmap targets existing estates, and greenfield event-driven projects generally start with Kafka or a cloud broker.

Eclipse Mosquitto: Does it support MQTT 5?

Yes, along with 3.1.1 and 3.1.

TIBCO Enterprise Message Service: Can EMS talk to Kafka?

Yes, an EMS transport for Apache Kafka is supported on Linux, which is the usual bridge during modernisation.

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