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Networking · head to head

Eclipse Mosquitto vs Traefik

Eclipse Mosquitto logo

Eclipse Mosquitto

Networking

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

From
Free
Rated
-
Full reviewWebsite
Traefik logo

Traefik

Networking

Modern cloud-native edge router and API gateway

From
Free
Rated
-
Full reviewWebsite

The short version

  • 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.; Traefik no transparent pricing displayed for Traefik Hub API Gateway or API Management products
  • They diverge on capability: Eclipse Mosquitto covers MQTT 5.0 support, Traefik covers API Gateway.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Eclipse Mosquitto and Traefik actually diverge.

Attributes where Eclipse Mosquitto and Traefik differ
AttributeEclipse MosquittoTraefik
Pricing modelOpen source, no licence feefreemium
PlatformsLinux, Windows, macOS, DockerKubernetes, Docker, Cloud
FoundedUnknown2015

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Networking).

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 Traefik

  • API Gateway
  • Load Balancing
  • SSL/TLS Termination
  • Kubernetes
  • Docker
  • Consul
  • etcd
  • Linux support

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 Traefik
  • An industrial gateway that buffers local telemetry and bridges selected topics to a cloud brokernot Traefik
  • Local development and testing of MQTT clients without provisioning a cloud IoT servicenot Traefik
  • An air-gapped deployment where a broker with no licence server and no phone-home behaviour is a requirementnot Traefik

Traefik

  • API gateway for microservices architecturenot Eclipse Mosquitto
  • Kubernetes ingress controllernot Eclipse Mosquitto
  • Container and VM traffic routingnot Eclipse Mosquitto
  • Cloud-native application managementnot 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.

Traefik

  • No transparent pricing displayed for Traefik Hub API Gateway or API Management products
  • No subscription period specified for paid tiers
  • Traefik Hub products require contacting sales for pricing

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

Traefik

Free

No published plan breakdown. See the Traefik review.

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 Traefik if

  • You need api gateway.
  • You want to start without paying.
  • You work on Kubernetes, Docker, Cloud.
  • You also want load balancing.
Traefik review

Questions people ask

Is Eclipse Mosquitto or Traefik better?
Neither clearly leads. Eclipse Mosquitto starts at Free and Traefik at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Eclipse Mosquitto or Traefik?
Eclipse Mosquitto starts at Free and Traefik at Free.
Does Eclipse Mosquitto or Traefik run on more platforms?
Eclipse Mosquitto runs on Linux, Windows, macOS, Docker. Traefik runs on Kubernetes, Docker, Cloud.
Can I use Eclipse Mosquitto for free?
Both have a free tier, so you can try either at no cost before committing.
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 Traefik is typically brought in for.
What can Eclipse Mosquitto do that Traefik cannot?
Eclipse Mosquitto covers MQTT 5.0 support, Very small footprint, Bridging, WebSockets listener. Traefik covers API Gateway, Load Balancing, SSL/TLS Termination, Kubernetes.

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.

Traefik: Is Traefik Proxy free to use?

Yes, Traefik Proxy is completely free and open source. You can download and use it at no cost.

Source
Eclipse Mosquitto: What licence is it?

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

Traefik: What pricing model does Traefik use for its paid products?

Traefik Hub products (API Gateway and API Management) use quote-based pricing. Specific rates are not published on the pricing page; you must contact sales to request pricing.

Source
Eclipse Mosquitto: How many clients can it handle?

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

Eclipse Mosquitto: Does it support MQTT 5?

Yes, along with 3.1.1 and 3.1.

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