Databases · head to head
VerneMQ vs Vitess

VerneMQ
Databases
Erlang MQTT broker whose source is Apache 2.0 but whose official binaries need a paid subscription
- From
- Free
- Rated
- -

Vitess
Databases
Scalable database clustering system for horizontal scaling of MySQL
- From
- Free
- Rated
- -
The short version
- Each has a real cost: VerneMQ the official binaries and Docker images are not Apache 2.0 but sit under a EULA requiring a yearly commercial subscription, a distinction easy to miss and awkward to discover during a licence audit.; Vitess vTGate scatter queries without sharding key incur significant performance penalties
- They diverge on capability: VerneMQ covers Erlang/OTP clustering, Vitess covers Horizontal Sharding.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which VerneMQ and Vitess actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Databases).
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 VerneMQ
- Erlang/OTP clustering
- MQTT 5.0 support
- Plugin system
- Backpressure handling
- Bridge support
- Metrics export
- MQTT over WebSockets
- Pluggable auth backends
Only in Vitess
- Horizontal Sharding
- Connection Pooling
- Query Routing
- Online Schema Changes
- Shard Management
- Replication Management
- Automated Failover
- MySQL
What people use each for
The jobs each tool is most often brought in to do.
VerneMQ
- An industrial operator that wants an MQTT broker with predictable memory behaviour and no data integration features it will not usenot Vitess
- A team building from source to stay strictly under Apache 2.0 terms with no vendor licence entanglementnot Vitess
- A deployment needing custom authentication logic implemented as a plugin in Lua or over a webhooknot Vitess
- An organisation that wants a broker maintained by a small European company rather than by a vendor that keeps changing licencesnot Vitess
Vitess
- Transaction processingnot VerneMQ
- Data storagenot VerneMQ
- Application backendnot VerneMQ
- Reportingnot VerneMQ
- Data analyticsnot VerneMQ
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
VerneMQ
- The official binaries and Docker images are not Apache 2.0 but sit under a EULA requiring a yearly commercial subscription, a distinction easy to miss and awkward to discover during a licence audit.
- Octavo Labs is a very small company, so support depth, response times and the bus factor on the codebase are materially thinner than at HiveMQ or EMQ.
- There is no data integration or rule engine layer, so routing messages into a database means writing and operating your own consumer service.
- Operating an Erlang cluster requires runtime knowledge that most teams do not have and will use for nothing else in their stack.
- There is no vendor-managed cloud offering, so every deployment is self-operated with the infrastructure and on-call cost that implies.
Vitess
- VTGate scatter queries without sharding key incur significant performance penalties
- Foreign key constraints not enforced across shards, requiring application-level integrity handling
- Single primary per keyspace limits multi-region write capabilities
- Distributed transactions without proper sharding key routing suffer performance degradation
Pricing, plan by plan
VerneMQ
Free- Source buildFree
- Apache 2.0 licensed source from GitHub
- Full clustering and plugin capability
- You compile and package it yourself
- Binary packages and Docker images$undefined/year
- Covered by the VerneMQ EULA, not Apache 2.0
- Yearly usage subscription expected for commercial use
- Official builds and Docker images
- Commercial support$undefined/year
- Evaluation, customisation and operations assistance
- Custom development
- Long-term maintenance agreements
Vitess
FreeNo published plan breakdown. See the Vitess review.
Which should you pick?
Choose VerneMQ if
- You need erlang/otp clustering.
- You want to start without paying.
- You work on Linux, Docker, macOS, Kubernetes.
- You also want mqtt 5.0 support.
Choose Vitess if
- You need horizontal sharding.
- You want to start without paying.
- You work on Linux, macOS, Docker, Kubernetes.
- You also want connection pooling.
Questions people ask
- Is VerneMQ or Vitess better?
- Neither clearly leads. VerneMQ starts at Free and Vitess at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, VerneMQ or Vitess?
- VerneMQ starts at Free and Vitess at Free.
- Does VerneMQ or Vitess run on more platforms?
- VerneMQ runs on Linux, Docker, macOS, Kubernetes. Vitess runs on Linux, macOS, Docker, Kubernetes.
- Can I use VerneMQ for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is VerneMQ best used for?
- VerneMQ is most often used for an industrial operator that wants an mqtt broker with predictable memory behaviour and no data integration features it will not use, a team building from source to stay strictly under apache 2.0 terms with no vendor licence entanglement, a deployment needing custom authentication logic implemented as a plugin in lua or over a webhook, an organisation that wants a broker maintained by a small european company rather than by a vendor that keeps changing licences. Of those, an industrial operator that wants an mqtt broker with predictable memory behaviour and no data integration features it will not use and a team building from source to stay strictly under apache 2.0 terms with no vendor licence entanglement are not what Vitess is typically brought in for.
- What can VerneMQ do that Vitess cannot?
- VerneMQ covers Erlang/OTP clustering, MQTT 5.0 support, Plugin system, Backpressure handling. Vitess covers Horizontal Sharding, Connection Pooling, Query Routing, Online Schema Changes.
Answered from the vendors’ own pages
VerneMQ: Is VerneMQ free?
The source is Apache 2.0 and free. The official binary packages and Docker images are covered by a separate EULA that expects a yearly fee for commercial use.
Vitess: Is Vitess free to use?
Yes. Vitess is completely free and open source under the Apache 2.0 license. It is a graduated CNCF project with no licensing costs or pricing tiers.
SourceVerneMQ: Is the project still maintained?
Yes. Octavo Labs AG in Zurich continues to publish 2.x releases, most recently in 2026.
Vitess: What databases does Vitess support?
Vitess supports MySQL and MariaDB as backend databases. It acts as a middleware layer that adds sharding and orchestration capabilities on top of these databases.
SourceVerneMQ: Does it have a managed cloud?
No. Every deployment is self-hosted, with commercial support available from Octavo Labs.
Vitess: Does Vitess require Kubernetes to run?
No. Vitess can run on Kubernetes using the Vitess Operator, but it can also be deployed on traditional infrastructure. Kubernetes integration is optional and provides additional automation benefits.
SourceVerneMQ: How does it compare to EMQX?
Narrower in features and without a rule engine, but with a simpler licence story for source builds after EMQX moved to BSL.
Vitess: How does Vitess handle cross-shard transactions?
Vitess supports distributed transactions across shards, but they require queries to be routed through the sharding key. Transactions without a proper sharding key can result in slower performance.
SourceVitess: Does Vitess enforce foreign key constraints?
Vitess does not enforce foreign key constraints across shards by default. Referential integrity must be managed at the application layer, though per-database support can be enabled with limitations.
SourceRelated pages
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