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Blynk vs Eclipse Mosquitto

Blynk logo

Blynk

Smart Home

IoT cloud platform with mobile app builder for connected devices

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: Blynk the free tier covers 5 devices, 1 user, 100,000 messages and one week of data retention; 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: Blynk covers Mobile App Builder, 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 Blynk and Eclipse Mosquitto actually diverge.

Attributes where Blynk and Eclipse Mosquitto differ
AttributeBlynkEclipse Mosquitto
Pricing modelfreemiumOpen source, no licence fee
PlatformsIOS, Android, Web, Any IoT deviceLinux, Windows, macOS, Docker
CategorySmart HomeNetworking
Founded2012Unknown

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 Blynk

  • Mobile App Builder
  • No-Code Interface
  • Real-Time Control
  • Cloud Storage
  • REST API
  • WebHooks
  • Mobile app
  • Cloud platform

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.

Blynk

  • Connecting IoT hardware to a hosted dashboard and mobile appnot Eclipse Mosquitto
  • Over-the-air firmware updates to fleets of devicesnot Eclipse Mosquitto
  • Automations triggered by device datanot Eclipse Mosquitto
  • White-label device apps for a hardware productnot Eclipse Mosquitto
  • Prototyping connected devices before committing to infrastructurenot Eclipse Mosquitto

Eclipse Mosquitto

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

Where each one falls short

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

Blynk

  • The free tier covers 5 devices, 1 user, 100,000 messages and one week of data retention
  • Data retention is tiered all the way up, reaching 12 months only on Enterprise
  • Automations and webhooks are rationed, from 5 scenarios and 1 webhook on free to 100 or more on Production
  • Over-the-air update campaigns are capped by tier, at 2 shipments on free and Starter
  • Production plans run from $199 to $1,099 a month depending on device count

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

Blynk

Free
  • FreeFree
    • 5 devices, 1 user
    • 1 week data retention
    • 100,000 messages/month
  • Starter$29/month
    • 10 devices, 1 user
    • 1 month data retention
    • 10,000,000 messages/month
  • Prototype$99/month
    • 50 devices and users
    • 6 months data retention
    • Unlimited messages/month
  • Production$199/month
    • 100-1000 devices and users
    • 12 months data retention
    • Unlimited messages/month

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 Blynk if

  • You need mobile app builder.
  • You want to start without paying.
  • You work on IOS, Android, Web, Any IoT device.
  • You also want no-code interface.
Blynk 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 Blynk or Eclipse Mosquitto better?
Neither clearly leads. Blynk 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, Blynk or Eclipse Mosquitto?
Blynk starts at Free and Eclipse Mosquitto at Free.
Does Blynk or Eclipse Mosquitto run on more platforms?
Blynk runs on IOS, Android, Web, Any IoT device. Eclipse Mosquitto runs on Linux, Windows, macOS, Docker.
Can I use Blynk for free?
Both have a free tier, so you can try either at no cost before committing.
What is Blynk best used for?
Blynk is most often used for connecting iot hardware to a hosted dashboard and mobile app, over-the-air firmware updates to fleets of devices, automations triggered by device data, white-label device apps for a hardware product. Of those, connecting iot hardware to a hosted dashboard and mobile app and over-the-air firmware updates to fleets of devices are not what Eclipse Mosquitto is typically brought in for.
What can Blynk do that Eclipse Mosquitto cannot?
Blynk covers Mobile App Builder, No-Code Interface, Real-Time Control, Cloud Storage. Eclipse Mosquitto covers MQTT 5.0 support, Very small footprint, Bridging, WebSockets listener.

Answered from the vendors’ own pages

Blynk: How much does Blynk cost?

Free plan available; Starter is $29/month; Prototype is $99/month; Production ranges $199-1,099/month; Enterprise has custom pricing.

Source
Eclipse Mosquitto: Can Mosquitto be clustered?

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

Blynk: What device and user limits does Blynk have?

Free plan supports 5 devices and 1 user. Starter supports 10 devices and 1 user. Prototype supports 50 devices and users. Production supports 100-1,000 devices and users. Enterprise offers custom limits.

Source
Eclipse Mosquitto: What licence is it?

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

Blynk: How long does Blynk retain data?

Free plan retains data for 1 week. Starter for 1 month. Prototype for 6 months. Production for 12 months. Enterprise can customize retention period.

Source
Eclipse Mosquitto: How many clients can it handle?

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

Blynk: What message limits apply to Blynk plans?

Free plan includes 100,000 messages/month. Starter allows 10 million messages/month. Prototype and Production tiers include unlimited messages.

Source
Eclipse Mosquitto: Does it support MQTT 5?

Yes, along with 3.1.1 and 3.1.

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