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Jitsu vs Eclipse Mosquitto

Jitsu logo

Jitsu

Developer Tools

Open source event pipeline that streams behavioural data to your own warehouse

From
Free
Rated
-
Full reviewWebsite
Eclipse Mosquitto logo

Eclipse Mosquitto

Networking

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Jitsu jitsu is a pipeline, not a customer data platform, so identity resolution, audience building and reverse ETL are absent and a marketing team expecting Segment parity will be disappointed.; 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.
  • They diverge on capability: Jitsu covers Event collection, Eclipse Mosquitto covers MQTT 5.0 support.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

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

Attributes where Jitsu and Eclipse Mosquitto differ
AttributeJitsuEclipse Mosquitto
Pricing modelPer month by event volumeOpen source, no licence fee
PlatformsWeb, Linux, Docker, Kubernetes, iOS, AndroidLinux, Windows, macOS, Docker
CategoryDeveloper ToolsNetworking

Identical on both: starting price (Free), 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 Jitsu

  • Event collection
  • Warehouse destinations
  • Connector syncs
  • Transformations
  • Bundled ClickHouse
  • Event debugger
  • Self-hosting
  • Custom domains

Only in Eclipse Mosquitto

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

What people use each for

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

Jitsu

  • A team paying five figures a year to a customer data platform when all it actually does is send events to Snowflakenot Eclipse Mosquitto
  • An engineering group that needs event collection running inside its own VPC for data residency or security review reasonsnot Eclipse Mosquitto
  • A product analytics setup that wants raw events in the warehouse as the source of truth rather than trapped in a vendor toolnot Eclipse Mosquitto
  • A startup that needs first-party event collection on its own domain to reduce loss from tracker blocking without paying CDP pricesnot Eclipse Mosquitto

Eclipse Mosquitto

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

Where each one falls short

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

Jitsu

  • Jitsu is a pipeline, not a customer data platform, so identity resolution, audience building and reverse ETL are absent and a marketing team expecting Segment parity will be disappointed.
  • Connector sync frequency is deliberately tiered, with the free plan limited to manual runs and one daily sync, so anything approaching operational freshness requires the paid plan or self-hosting.
  • Self-hosting means you own the reliability of a system that drops data silently when misconfigured, and event loss is uniquely hard to notice because nothing errors, the numbers are just quietly lower.
  • The connector catalogue is far smaller than Fivetran or Airbyte, so if your requirement is pulling from many SaaS sources rather than pushing events, Jitsu is the wrong half of the problem.
  • It is a small company with a small commercial team, so enterprise procurement processes around security review, contractual SLAs and support escalation take longer than with an incumbent vendor.

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.

Pricing, plan by plan

Jitsu

Free
  • Open SourceFree
    • MIT licence
    • Self-host on any cloud
    • No usage limits
  • Cloud FreeFree
    • Unlimited captured events
    • 200,000 active events per month
    • Manual connector runs only
  • Business$99/month
    • 2,000,000 active events per month
    • $40 per additional million events
    • Hourly connector sync frequency
  • Enterprise$undefined/year
    • Custom event volume
    • One minute sync frequency
    • Unlimited active syncs

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

Which should you pick?

Choose Jitsu if

  • You need event collection.
  • You want to start without paying.
  • You work on Web, Linux, Docker, Kubernetes, iOS, Android.
  • You also want warehouse destinations.
Jitsu review

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

Questions people ask

Is Jitsu or Eclipse Mosquitto better?
Neither clearly leads. Jitsu starts at Free and Eclipse Mosquitto at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Jitsu or Eclipse Mosquitto?
Jitsu starts at Free and Eclipse Mosquitto at Free.
Does Jitsu or Eclipse Mosquitto run on more platforms?
Jitsu runs on Web, Linux, Docker, Kubernetes, iOS, Android. Eclipse Mosquitto runs on Linux, Windows, macOS, Docker.
Can I use Jitsu for free?
Both have a free tier, so you can try either at no cost before committing.
What is Jitsu best used for?
Jitsu is most often used for a team paying five figures a year to a customer data platform when all it actually does is send events to snowflake, an engineering group that needs event collection running inside its own vpc for data residency or security review reasons, a product analytics setup that wants raw events in the warehouse as the source of truth rather than trapped in a vendor tool, a startup that needs first-party event collection on its own domain to reduce loss from tracker blocking without paying cdp prices. Of those, a team paying five figures a year to a customer data platform when all it actually does is send events to snowflake and an engineering group that needs event collection running inside its own vpc for data residency or security review reasons are not what Eclipse Mosquitto is typically brought in for.
What can Jitsu do that Eclipse Mosquitto cannot?
Jitsu covers Event collection, Warehouse destinations, Connector syncs, Transformations. Eclipse Mosquitto covers MQTT 5.0 support, Very small footprint, Bridging, WebSockets listener.

Answered from the vendors’ own pages

Jitsu: Is Jitsu the same as Jitsi?

No. Jitsu is an open source event data pipeline. Jitsi is an unrelated video conferencing project.

Eclipse Mosquitto: Can Mosquitto be clustered?

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

Jitsu: Can I self-host for free?

Yes. The project is MIT licensed with no usage limits when self-hosted.

Eclipse Mosquitto: What licence is it?

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

Jitsu: How does the cost compare with Segment?

The Business plan is 99 US dollars a month for two million active events, where a per-tracked-user CDP typically costs orders of magnitude more at comparable volume.

Eclipse Mosquitto: How many clients can it handle?

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

Jitsu: Does Jitsu do identity resolution?

No. It transports and transforms events; identity stitching and audiences are not part of the product.

Eclipse Mosquitto: Does it support MQTT 5?

Yes, along with 3.1.1 and 3.1.

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