Softwr

Databases · head to head

EMQX vs Nile

EMQX logo

EMQX

Databases

Erlang MQTT broker for large IoT fleets, relicensed to BSL with production free use limited to one node

From
Free
Rated
-
Full reviewWebsite
Nile logo

Nile

Databases

PostgreSQL database platform built for multi-tenant SaaS applications

From
Free
Rated
-
Full reviewWebsite

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.; Nile limited to B2B SaaS use cases, not optimized for single-tenant applications
  • They diverge on capability: EMQX covers Erlang clustering, Nile covers Multi-tenant virtualization.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which EMQX and Nile actually diverge.

Attributes where EMQX and Nile differ
AttributeEMQXNile
Pricing modelPer month by connection and session volumePay-per-use with committed pricing
PlatformsLinux, Docker, Kubernetes, Cloud, macOSWeb, API

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 Nile

  • Multi-tenant virtualization
  • Serverless compute
  • Vector embeddings
  • Tenant branching
  • Schema migration
  • Tenant dashboards
  • Global deployment
  • PostgreSQL compatible

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 Nile
  • An industrial operator routing sensor telemetry straight into TimescaleDB or Kafka without writing a consumer servicenot Nile
  • An IoT product team that has outgrown a single Mosquitto instance and needs clustering and shared subscriptionsnot Nile
  • A smart building deployment mixing MQTT, CoAP and LwM2M devices on one brokernot Nile

Nile

  • Multi-tenant SaaS applications with per-customer isolationnot EMQX
  • Serverless workloads needing cost-efficient auto-scalingnot EMQX
  • RAG applications leveraging vector embeddingsnot EMQX
  • Applications requiring per-tenant analytics dashboardsnot EMQX
  • Cross-customer analytics using shared data tablesnot 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.

Nile

  • Limited to B2B SaaS use cases, not optimized for single-tenant applications
  • Query token abstraction makes pricing less transparent than traditional compute pricing
  • Free plan limited to 50M query tokens and 1GB storage for development
  • Serverless startup latency may impact performance-sensitive applications
  • Per-million token overages require careful monitoring to avoid surprise costs

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

Nile

Free
  • FreeFree
    • 50M query tokens included
    • 1 GB storage
    • 500 connections
  • Pro$15/month
    • 150M query tokens included
    • 5 GB storage
    • 10,000 connections
  • Scale$350/month
    • 500M query tokens included
    • 50 GB storage
    • 100,000 connections
  • Enterprise$undefined/custom
    • Custom resource allocation
    • Large-scale workloads supporting millions of tenants
    • Designated support

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.
EMQX review

Choose Nile if

  • You need multi-tenant virtualization.
  • You want to start without paying.
  • You work on Web, API.
  • You also want serverless compute.
Nile review

Questions people ask

Is EMQX or Nile better?
Neither clearly leads. EMQX starts at Free and Nile at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, EMQX or Nile?
EMQX starts at Free and Nile at Free.
Does EMQX or Nile run on more platforms?
EMQX runs on Linux, Docker, Kubernetes, Cloud, macOS. Nile runs on Web, API.
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 Nile is typically brought in for.
What can EMQX do that Nile cannot?
EMQX covers Erlang clustering, MQTT 5.0 and QUIC, Rule engine, Data integration sinks. Nile covers Multi-tenant virtualization, Serverless compute, Vector embeddings, Tenant branching.

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.

Nile: What are query tokens and how are they calculated?

Query tokens are abstract units of CPU and memory used when queries execute on Nile's serverless compute. The platform uses this abstraction to enable fair, predictable pay-per-use pricing.

Source
EMQX: Can I run a free cluster?

No. The additional use grant permits free production use of one node; clustering requires a commercial licence.

Nile: Do all Nile plans include multi-tenant isolation?

Yes. All plans including the free tier include unlimited databases, tenants, and vector embeddings with built-in data isolation.

Source
EMQX: 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.

Nile: What is included in the Pro plan?

The Pro plan ($15/month) includes 150M query tokens, 5GB storage, 10,000 connections, and a 99.95% SLA. SAML and MFA authentication features are available on Pro and above.

Source
EMQX: 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.

Share

Related pages

More on EMQX

More on Nile

Keep looking

Other head to heads