Databases · head to head
EMQX vs Grist

EMQX
Databases
Erlang MQTT broker for large IoT fleets, relicensed to BSL with production free use limited to one node
- From
- Free
- Rated
- -
The short version
- Each has a real cost: EMQX the move to Business Source Licence 1.1 at version 5.9 in May 2025 limits free production use to a single node, so the clustering that justifies choosing EMQX now requires a paid subscription from the second node onward.; Grist business plan has minimum 5-user requirement
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which EMQX and Grist 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 EMQX
- Erlang clustering
- MQTT 5.0 and QUIC
- Rule engine
- Data integration sinks
- Session persistence
- Multi protocol gateways
- Authentication and authorisation
- Dashboard and REST API
Only in Grist
Nothing recorded that EMQX does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
EMQX
- A connected vehicle platform needing millions of persistent MQTT sessions with QUIC for handover across mobile networksnot Grist
- An industrial operator routing sensor telemetry straight into TimescaleDB or Kafka without writing a consumer servicenot Grist
- An IoT product team that has outgrown a single Mosquitto instance and needs clustering and shared subscriptionsnot Grist
- A smart building deployment mixing MQTT, CoAP and LwM2M devices on one brokernot Grist
Grist
- Collaborative data and spreadsheet managementnot EMQX
- Database creation and automationnot EMQX
- Team data analysis and reportingnot EMQX
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
EMQX
- The move to Business Source Licence 1.1 at version 5.9 in May 2025 limits free production use to a single node, so the clustering that justifies choosing EMQX now requires a paid subscription from the second node onward.
- The relicensing arrived in a minor release, which caught users who had pinned to 5.x expecting Apache 2.0 terms and forced legal review of existing deployments.
- Running an Erlang/OTP cluster well requires operational knowledge most teams do not have, and diagnosing distribution, mnesia or memory issues means learning a runtime you use for nothing else.
- Enterprise pricing is quoted rather than published for the self-managed edition, so the cost of the clustered configuration you actually need is invisible until you talk to sales.
- The Serverless tier caps at around a thousand connections and shares infrastructure, which makes it a prototyping tier rather than a genuine small production option.
Grist
- Business plan has minimum 5-user requirement
- Enterprise self-hosted pricing not disclosed publicly
- Annual billing discount only 20%, lower than some competitors
Pricing, plan by plan
EMQX
Free- Open Source single nodeFree
- BSL 1.1 licence since version 5.9
- Free production use of one node only
- All former enterprise features visible
- ServerlessFree
- Free monthly quota then pay as you go
- Up to 1,000 connections
- 8 by 5 support
- Dedicated Flex$234/month
- Single tenant cluster
- Traffic allowance included
- 24/7 support
- Enterprise self-managed$undefined/year
- Deploy on premises, at the edge or in any cloud
- Clustering licensed
- 256 MB maximum message size
Grist
Free- FreeFree
- Unlimited documents
- Up to 5,000 records per document
- 30-day snapshot history
- Pro$10/month
- Up to 100,000 records per document
- 3-year snapshot history
- 100+ AI credits monthly
- Business$30/month
- 150,000 records per document
- 5-year snapshot history
- 2,000 AI credits monthly
Which should you pick?
Choose EMQX if
- You need erlang clustering.
- You want to start without paying.
- You work on Linux, Docker, Kubernetes, Cloud, macOS.
- You also want mqtt 5.0 and quic.
Questions people ask
- Is EMQX or Grist better?
- Neither clearly leads. EMQX starts at Free and Grist at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, EMQX or Grist?
- EMQX starts at Free and Grist at Free.
- Does EMQX or Grist run on more platforms?
- EMQX runs on Linux, Docker, Kubernetes, Cloud, macOS. Grist runs on Web.
- Can I use EMQX for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is EMQX best used for?
- EMQX is most often used for a connected vehicle platform needing millions of persistent mqtt sessions with quic for handover across mobile networks, an industrial operator routing sensor telemetry straight into timescaledb or kafka without writing a consumer service, an iot product team that has outgrown a single mosquitto instance and needs clustering and shared subscriptions, a smart building deployment mixing mqtt, coap and lwm2m devices on one broker. Of those, a connected vehicle platform needing millions of persistent mqtt sessions with quic for handover across mobile networks and an industrial operator routing sensor telemetry straight into timescaledb or kafka without writing a consumer service are not what Grist is typically brought in for.
- What can EMQX do that Grist cannot?
- EMQX covers Erlang clustering, MQTT 5.0 and QUIC, Rule engine, Data integration sinks.
Answered from the vendors’ own pages
EMQX: Is EMQX still open source?
Not in the OSI sense since version 5.9. It is source-available under Business Source Licence 1.1, reverting to Apache 2.0 four years after each release.
Grist: Does Grist have a free version?
Yes. Grist Free includes unlimited documents with up to 5,000 records each, 30-day snapshot history, and 100 AI Assistant credits. No credit card required.
SourceEMQX: Can I run a free cluster?
No. The additional use grant permits free production use of one node; clustering requires a commercial licence.
Grist: How much does Grist Pro cost?
Grist Pro is $10/user/month (billed monthly) or $8/user/month with annual billing. It includes up to 100,000 records per document and 3-year snapshot history.
SourceEMQX: What changed for existing users?
Community and enterprise editions merged, so all features are now visible, but the licence terms tightened in the same minor release.
Grist: What does Grist's Business plan include?
Grist Business is $30/user/month ($24 annually) with a minimum of 5 users. It includes 150,000 records per document, 5-year snapshot history, 2,000 AI credits monthly, and automations with priority support.
SourceEMQX: Which version is still Apache 2.0?
Releases before 5.9 remain under Apache 2.0, and each BSL release converts to Apache 2.0 four years after publication.
Grist: Do nonprofits get discounts on Grist?
Yes. Nonprofits receive a 50% discount on the Pro plan with Letter of Determination verification.
SourceRelated pages
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