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Automation Integration · head to head

Microsoft Power Automate vs OpenHAB

Microsoft Power Automate logo

Microsoft Power Automate

Automation Integration

Automate tasks across cloud and on-premises apps

From
Free
Rated
-
Full reviewWebsite
OpenHAB logo

OpenHAB

Smart Home

Open source automation software for your home

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Microsoft Power Automate free plan limited to 750 flow runs/month and standard connectors only; premium connectors require paid plans; OpenHAB requires a 64-bit Java 21 JVM to be installed and maintained separately
  • They diverge on capability: Microsoft Power Automate covers Automated flows, OpenHAB covers Vendor Agnostic.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Microsoft Power Automate and OpenHAB actually diverge.

Attributes where Microsoft Power Automate and OpenHAB differ
AttributeMicrosoft Power AutomateOpenHAB
Pricing modelUnknownopen-source
PlatformsWeb, Cloud, DesktopLinux, Windows, MacOS, Docker, Raspberry Pi
CategoryAutomation IntegrationSmart Home
Founded20162010

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 Microsoft Power Automate

  • Automated flows
  • Instant flows
  • Scheduled flows
  • Desktop automation
  • Process mining
  • Business process flows
  • Approval workflows
  • 500+ connectors

Only in OpenHAB

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

What people use each for

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

Microsoft Power Automate

  • Workflow Automationnot OpenHAB
  • Data Integrationnot OpenHAB
  • Process Automationnot OpenHAB
  • App Integrationnot OpenHAB
  • API Connectivitynot OpenHAB

OpenHAB

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

Where each one falls short

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

Microsoft Power Automate

  • Free plan limited to 750 flow runs/month and standard connectors only; premium connectors require paid plans
  • Not suitable for long-running workflows; can fail unexpectedly without warning
  • Limited to simple linear logic; fails with complex workflows involving multiple stakeholders
  • Tasks cannot automate at scale when requiring more than approximately 60 users

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

Pricing, plan by plan

Microsoft Power Automate

Free
  • FreeFree
    • 750 flow runs/month
    • Standard connectors only
    • Basic cloud flows
  • Premium$15/user/month
    • Cloud flows (DPA)
    • Attended RPA
    • 250 MB Dataverse database
  • Process$150/bot/month
    • Unattended automation
    • Cloud and desktop flows
    • 50 MB Dataverse database
  • Hosted Process$215/bot/month
    • Microsoft-managed virtual machine
    • Unattended automation
    • Same Dataverse entitlements as Process plan

OpenHAB

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

Which should you pick?

Choose Microsoft Power Automate if

  • You need automated flows.
  • You want to start without paying.
  • You work on Web, Cloud, Desktop.
  • You also want instant flows.
Microsoft Power Automate review

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

Questions people ask

Is Microsoft Power Automate or OpenHAB better?
Neither clearly leads. Microsoft Power Automate starts at Free and OpenHAB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Microsoft Power Automate or OpenHAB?
Microsoft Power Automate starts at Free and OpenHAB at Free.
Does Microsoft Power Automate or OpenHAB run on more platforms?
Microsoft Power Automate runs on Web, Cloud, Desktop. OpenHAB runs on Linux, Windows, MacOS, Docker, Raspberry Pi.
Can I use Microsoft Power Automate for free?
Both have a free tier, so you can try either at no cost before committing.
What is Microsoft Power Automate best used for?
Microsoft Power Automate is most often used for workflow automation, data integration, process automation, app integration. Of those, workflow automation and data integration are not what OpenHAB is typically brought in for.
What can Microsoft Power Automate do that OpenHAB cannot?
Microsoft Power Automate covers Automated flows, Instant flows, Scheduled flows, Desktop automation. OpenHAB covers Vendor Agnostic, Rule Engine, 200+ Bindings, Local Processing.

Answered from the vendors’ own pages

Microsoft Power Automate: Is Power Automate included with Microsoft 365?

Yes. If you have an eligible Microsoft 365 subscription, you can use Power Automate at no extra cost for flows relying only on standard connectors (SharePoint, Outlook, Teams). Premium connectors (Salesforce, SAP, Oracle) require paid plans.

Source
OpenHAB: How much does openHAB cost?

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

Source
Microsoft Power Automate: How many flow runs are allowed on the free plan?

Power Automate's free tier (included with Microsoft 365) is limited to 750 flow runs per month and standard connectors only. Out of 900+ total connectors, the free plan only includes Microsoft ecosystem apps and limited third-party apps.

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
Microsoft Power Automate: What's the difference between Premium and Process plans?

Premium ($15/user/month) provides attended automation with cloud flows and standard RPA. Process plan ($150/bot/month) enables unattended automation where bots run without human intervention on virtual machines for high-volume, repetitive tasks.

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
Microsoft Power Automate: Does Power Automate support long-running workflows?

No. Power Automate is not suitable for long-lasting workflows because they can run without warning and fail unexpectedly. The platform is built for linear, branching logic (if-then) rather than complex, multi-step business processes involving multiple stakeholders.

Source
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