Softwr

API Management · head to head

KeystoneJS vs Microsoft Power Automate

KeystoneJS logo

KeystoneJS

API Management

Powerful Node.js headless CMS framework and API platform

From
Free
Rated
-
Full reviewWebsite
Microsoft Power Automate logo

Microsoft Power Automate

Automation & Integration

Automate tasks across cloud and on-premises apps

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: KeystoneJS database support is limited to PostgreSQL, MySQL and SQLite; Microsoft Power Automate free plan limited to 750 flow runs/month and standard connectors only; premium connectors require paid plans
  • They diverge on capability: KeystoneJS covers REST API, Microsoft Power Automate covers Automated flows.

Where they differ

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

Attributes where KeystoneJS and Microsoft Power Automate differ
AttributeKeystoneJSMicrosoft Power Automate
Pricing modelopen-sourceUnknown
PlatformsNode.js, Self-hostedWeb, Cloud, Desktop
CategoryAPI ManagementAutomation & Integration

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), founded (2016).

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 KeystoneJS

  • REST API
  • GraphQL API
  • Admin interface
  • Node.js
  • Next.js
  • React
  • Databases
  • Node.js support

Only in Microsoft Power Automate

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

What people use each for

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

KeystoneJS

  • Building a headless CMS with a GraphQL API from a TypeScript schemanot Microsoft Power Automate
  • Generating a configurable Admin UI for editorsnot Microsoft Power Automate
  • Adding structured rich text content with the document fieldnot Microsoft Power Automate

Microsoft Power Automate

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

Where each one falls short

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

KeystoneJS

  • Database support is limited to PostgreSQL, MySQL and SQLite
  • Keystone 5 is a separate legacy product documented on a different site and is not covered by the Keystone 6 docs
  • Upgrading requires following a dedicated Migrate to 8.0.0 guide, so major versions are not drop-in
  • Free support is a community Slack; enterprise-grade consulting and support is a separate paid engagement with Thinkmill and no published price

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

Pricing, plan by plan

KeystoneJS

Free
  • Open SourceFree
    • Full KeystoneJS
    • Community support

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

Which should you pick?

Choose KeystoneJS if

  • You need rest api.
  • You want to start without paying.
  • You work on Node.js, Self-hosted.
  • You also want graphql api.
KeystoneJS review

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

Questions people ask

Is KeystoneJS or Microsoft Power Automate better?
Neither clearly leads. KeystoneJS starts at Free and Microsoft Power Automate at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, KeystoneJS or Microsoft Power Automate?
KeystoneJS starts at Free and Microsoft Power Automate at Free.
Does KeystoneJS or Microsoft Power Automate run on more platforms?
KeystoneJS runs on Node.js, Self-hosted. Microsoft Power Automate runs on Web, Cloud, Desktop.
Can I use KeystoneJS for free?
Both have a free tier, so you can try either at no cost before committing.
What is KeystoneJS best used for?
KeystoneJS is most often used for building a headless cms with a graphql api from a typescript schema, generating a configurable admin ui for editors, adding structured rich text content with the document field. Of those, building a headless cms with a graphql api from a typescript schema and generating a configurable admin ui for editors are not what Microsoft Power Automate is typically brought in for.
What can KeystoneJS do that Microsoft Power Automate cannot?
KeystoneJS covers REST API, GraphQL API, Admin interface, Node.js. Microsoft Power Automate covers Automated flows, Instant flows, Scheduled flows, Desktop automation.

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
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
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
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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