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Databases · head to head

EMQX vs PhpStorm

EMQX logo

EMQX

Databases

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

From
Free
Free plan
Yes
Visit EMQXFull review
PhpStorm logo

PhpStorm

Developer Tools

JetBrains IDE for PHP web development

From
$24/month
Free plan
No
Visit PhpStormFull review

The short version

  • EMQX has a free plan, then $234/mo; PhpStorm starts at $24/mo.
  • Only EMQX lists erlang clustering; only PhpStorm lists PHP-aware coding assistance.
  • Where PhpStorm falls short: requires an ongoing paid subscription with no free tier for commercial use.
  • Prices and features on this page were last checked on 31 August 2026.

Where they differ

Only the attributes on which EMQX and PhpStorm actually diverge.

Attributes where EMQX and PhpStorm differ
AttributeEMQXPhpStorm
Starting priceFree$24/month
Pricing modelPer month by connection and session volumeSubscription
Free tierYesNo
PlatformsLinux, Self-hosted, Web, macOSWindows, macOS, Linux
CategoryDatabasesDeveloper Tools

Not yet recorded: founded for EMQX.

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 PhpStorm

  • PHP-aware coding assistance
  • Integrated debugger
  • Front-end tooling
  • Database tools
  • Version control integration
  • Docker and remote deployment

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

PhpStorm

  • Building PHP web applications with Laravel or Symfonynot EMQX
  • Debugging PHP code with Xdebugnot EMQX
  • Working across PHP, HTML, CSS, and JavaScript in one projectnot EMQX
  • Managing databases alongside application codenot 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

PhpStorm

  • Requires an ongoing paid subscription with no free tier for commercial use
  • Heavier and slower to start than lightweight code editors
  • Some advanced framework-specific tooling requires additional configuration or plugins
  • Renewal pricing rises for lapsed subscriptions after the grace period

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/mo
    • Single tenant cluster
    • Traffic allowance included
    • 24/7 support
  • Enterprise self-managedOn request
    • Deploy on premises, at the edge or in any cloud
    • Clustering licensed
    • 256 MB maximum message size

PhpStorm

$24/month
  • Individual$24/mo
    • Personal use license
    • Access to PhpStorm
    • Free for students and open-source maintainers
  • Organization$34/mo
    • Business use license
    • Access to PhpStorm
    • Volume and renewal discounts

Which should you pick?

Choose EMQX if

  • You need erlang clustering.
  • You want to start without paying.
  • You work on Linux, Self-hosted, Web, macOS.
  • You also want mqtt 5.0 and quic.
EMQX review

Choose PhpStorm if

  • You need php-aware coding assistance.
  • You work on Windows, macOS, Linux.
  • You also want integrated debugger.
PhpStorm review

Questions people ask

Is EMQX or PhpStorm better?
Neither clearly leads. EMQX starts at Free and PhpStorm at $24/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, EMQX or PhpStorm?
EMQX has a free tier; the other does not. Paid plans start at Free for EMQX and $24/month for PhpStorm.
Does EMQX or PhpStorm run on more platforms?
EMQX runs on Linux, Self-hosted, Web, macOS. PhpStorm runs on Windows, macOS, Linux.
Can I use EMQX for free?
Yes. EMQX has a free tier, so you can try it without paying. PhpStorm starts at $24/month.
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 PhpStorm is typically brought in for.
What can EMQX do that PhpStorm cannot?
EMQX covers Erlang clustering, MQTT 5.0 and QUIC, Rule engine, Data integration sinks. PhpStorm covers PHP-aware coding assistance, Integrated debugger, Front-end tooling, Database tools.

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.

PhpStorm: How much does PhpStorm cost?

PhpStorm is sold via JetBrains Toolbox subscription starting around $24/month for individuals and $34/month for organizations, with free licenses for students and open-source maintainers.

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.

PhpStorm: Is there a free trial?

JetBrains offers a free trial of PhpStorm so developers can test it before subscribing.

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.

PhpStorm: What platforms does PhpStorm support?

PhpStorm is a desktop IDE available on Windows, macOS, and Linux via JetBrains Toolbox.

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.

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