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Smart Home · head to head

OpenHAB vs Tasmota

OpenHAB logo

OpenHAB

Smart Home

Open source automation software for your home

From
Free
Rated
-
Full reviewWebsite
Tasmota logo

Tasmota

Smart Home

Open-source firmware for ESP8266/ESP32 based devices

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: OpenHAB requires a 64-bit Java 21 JVM to be installed and maintained separately; Tasmota tasmota only runs on Espressif ESP8266, ESP8285, ESP32, ESP32-S and ESP32-C3 chipsets, so devices built on other silicon cannot use it
  • They diverge on capability: OpenHAB covers Vendor Agnostic, Tasmota covers Local Control.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which OpenHAB and Tasmota actually diverge.

Attributes where OpenHAB and Tasmota differ
AttributeOpenHABTasmota
PlatformsLinux, Windows, MacOS, Docker, Raspberry PiESP8266, ESP32, Compatible devices
Founded20102017

Identical on both: starting price (Free), pricing model (open-source), free tier (Yes), user rating (Not yet rated), category (Smart Home).

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 OpenHAB

  • Vendor Agnostic
  • Rule Engine
  • 200+ Bindings
  • Local Processing
  • Z-Wave
  • Zigbee
  • MQTT
  • REST API

Only in Tasmota

  • Local Control
  • MQTT Support
  • Web Interface
  • OTA Updates
  • Home Assistant
  • Domoticz
  • OpenHAB
  • Node-RED

What people use each for

The jobs each tool is most often brought in to do.

OpenHAB

  • Self-hosted vendor neutral home automation hubnot Tasmota
  • Bridging smart home devices from different manufacturers under one set of rulesnot Tasmota

Tasmota

  • Replacing vendor cloud firmware on ESP based smart plugs and switchesnot OpenHAB
  • Controlling smart home devices locally over MQTT or HTTPnot OpenHAB
  • Integrating off the shelf Wi-Fi devices with Home Assistant without a cloud accountnot OpenHAB

Where each one falls short

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

OpenHAB

  • Requires a 64-bit Java 21 JVM to be installed and maintained separately
  • Oracle Java is explicitly not recommended by the project because of potential licensing restrictions
  • The recommended hardware is a dedicated Raspberry Pi 4 or newer rather than shared hardware
  • Some version upgrades require additional manual steps run through a separate upgrade tool

Tasmota

  • Tasmota only runs on Espressif ESP8266, ESP8285, ESP32, ESP32-S and ESP32-C3 chipsets, so devices built on other silicon cannot use it
  • Initial installation requires opening the device, bridging GPIO0 to ground during boot and using a 3.3V serial programmer; a 5V programmer damages the chip
  • The ESP chip needs at least 150mA at 3.3V, so an underpowered supply causes flashing and stability failures
  • The Wi-Fi setup access point stays active for only 3 minutes, after which the device must be power cycled to try again
  • The Power Cycle Recovery feature can reset a device to firmware defaults where mains power fluctuates, and the docs advise disabling it in that case

Pricing, plan by plan

OpenHAB

Free
  • Community EditionFree
    • Unlimited devices
    • 200+ bindings
    • Local control

Tasmota

Free
  • CommunityFree
    • Full firmware
    • MQTT
    • Web UI

Which should you pick?

Choose OpenHAB if

  • You need vendor agnostic.
  • You want to start without paying.
  • You work on Linux, Windows, MacOS, Docker, Raspberry Pi.
  • You also want rule engine.
OpenHAB review

Choose Tasmota if

  • You need local control.
  • You want to start without paying.
  • You work on ESP8266, ESP32, Compatible devices.
  • You also want mqtt support.
Tasmota review

Questions people ask

Is OpenHAB or Tasmota better?
Neither clearly leads. OpenHAB starts at Free and Tasmota at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpenHAB or Tasmota?
OpenHAB starts at Free and Tasmota at Free.
Does OpenHAB or Tasmota run on more platforms?
OpenHAB runs on Linux, Windows, MacOS, Docker, Raspberry Pi. Tasmota runs on ESP8266, ESP32, Compatible devices.
Can I use OpenHAB for free?
Both have a free tier, so you can try either at no cost before committing.
What is OpenHAB best used for?
OpenHAB is most often used for self-hosted vendor neutral home automation hub, bridging smart home devices from different manufacturers under one set of rules. Of those, self-hosted vendor neutral home automation hub and bridging smart home devices from different manufacturers under one set of rules are not what Tasmota is typically brought in for.
What can OpenHAB do that Tasmota cannot?
OpenHAB covers Vendor Agnostic, Rule Engine, 200+ Bindings, Local Processing. Tasmota covers Local Control, MQTT Support, Web Interface, OTA Updates.

Answered from the vendors’ own pages

OpenHAB: How much does openHAB cost?

openHAB is 100% open source and completely free to download, install, and use across all supported platforms.

Source
Tasmota: What is the cost of Tasmota?

Tasmota is completely free as open-source firmware for ESP devices. Source code is available on GitHub, and the project accepts donations for continued development.

Source
OpenHAB: Are there any subscription fees for openHAB?

No, openHAB has no subscription fees. The software is free and released under an open source license for unlimited use.

Source
Tasmota: Can Tasmota be modified and redistributed?

Yes, Tasmota is open-source software allowing users to access, compile, modify, and redistribute builds according to the project LICENSE.

Source
OpenHAB: How can I support openHAB?

While openHAB is free to use, the project accepts voluntary donations through the openHAB Foundation to support development and maintenance.

Source
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