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Networking · head to head

Eclipse Mosquitto vs Pop!_OS

Eclipse Mosquitto logo

Eclipse Mosquitto

Networking

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

From
Free
Rated
-
Full reviewWebsite
Pop!_OS logo

Pop!_OS

Operating Systems

Ubuntu-based Linux distribution tuned for developers and GPU work

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.; Pop!_OS built primarily around System76 hardware, so other machines get less attention
  • They diverge on capability: Eclipse Mosquitto covers MQTT 5.0 support, Pop!_OS covers NVIDIA ISO.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Eclipse Mosquitto and Pop!_OS actually diverge.

Attributes where Eclipse Mosquitto and Pop!_OS differ
AttributeEclipse MosquittoPop!_OS
PlatformsLinux, Windows, macOS, DockerLinux, Desktop
CategoryNetworkingOperating Systems

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), 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 Pop!_OS

  • NVIDIA ISO
  • Auto-tiling
  • Pop!_Shop
  • Ubuntu base

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

Pop!_OS

  • Machine learning and graphics work needing NVIDIA drivers that work on first bootnot Eclipse Mosquitto
  • Developers who want tiling without configuring a window managernot Eclipse Mosquitto
  • System76 hardware, which it is built aroundnot 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.

Pop!_OS

  • Built primarily around System76 hardware, so other machines get less attention
  • Based on Ubuntu LTS, so packages lag current upstream
  • A smaller team than Ubuntu or Fedora, and releases have sometimes slipped well behind the Ubuntu base
  • The COSMIC desktop rewrite has been a long transition with the older GNOME-based version in maintenance

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

Pop!_OS

Free
  • Pop!_OSFree
    • Full functionality
    • Commercial use permitted
    • Community support

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 Pop!_OS if

  • You need nvidia iso.
  • You want to start without paying.
  • You work on Linux, Desktop.
  • You also want auto-tiling.
Pop!_OS review

Questions people ask

Is Eclipse Mosquitto or Pop!_OS better?
Neither clearly leads. Eclipse Mosquitto starts at Free and Pop!_OS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Eclipse Mosquitto or Pop!_OS?
Eclipse Mosquitto starts at Free and Pop!_OS at Free.
Does Eclipse Mosquitto or Pop!_OS run on more platforms?
Eclipse Mosquitto runs on Linux, Windows, macOS, Docker. Pop!_OS runs on Linux, Desktop.
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 Pop!_OS is typically brought in for.
What can Eclipse Mosquitto do that Pop!_OS cannot?
Eclipse Mosquitto covers MQTT 5.0 support, Very small footprint, Bridging, WebSockets listener. Pop!_OS covers NVIDIA ISO, Auto-tiling, Pop!_Shop, Ubuntu base.

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.

Pop!_OS: Is Pop!_OS free?

Yes, free and open source. System76 funds it through hardware sales.

Eclipse Mosquitto: What licence is it?

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

Pop!_OS: Why is there a separate NVIDIA download?

It ships with the proprietary GPU drivers already installed and working, which removes the most common first-day failure on Linux for GPU work.

Eclipse Mosquitto: How many clients can it handle?

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

Pop!_OS: Is it just Ubuntu?

It is based on Ubuntu LTS and uses its repositories, with a different desktop, tiling, an NVIDIA image and System76 tuning on top.

Eclipse Mosquitto: Does it support MQTT 5?

Yes, along with 3.1.1 and 3.1.

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