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Databases · head to head

Apache Solr vs Microsoft Power Automate

Apache Solr logo

Apache Solr

Databases

Enterprise search platform built on Apache Lucene

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: Apache Solr xML-heavy configuration and a developer experience that feels dated beside newer engines; Microsoft Power Automate free plan limited to 750 flow runs/month and standard connectors only; premium connectors require paid plans
  • They diverge on capability: Apache Solr covers Lucene-based indexing, Microsoft Power Automate covers Automated flows.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Apache Solr and Microsoft Power Automate differ
AttributeApache SolrMicrosoft Power Automate
Pricing modelOpen source, no licence feeUnknown
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb, Cloud, Desktop
CategoryDatabasesAutomation Integration
FoundedUnknown2016

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 Apache Solr

  • Lucene-based indexing
  • Faceted search
  • SolrCloud
  • Schema control

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.

Apache Solr

  • Library, archive and catalogue search where faceting is centralnot Microsoft Power Automate
  • Long-lived enterprise deployments valuing stability over noveltynot Microsoft Power Automate
  • Search requiring precise, explicitly configured relevance tuningnot Microsoft Power Automate

Microsoft Power Automate

  • Workflow Automationnot Apache Solr
  • Data Integrationnot Apache Solr
  • Process Automationnot Apache Solr
  • App Integrationnot Apache Solr
  • API Connectivitynot Apache Solr

Where each one falls short

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

Apache Solr

  • XML-heavy configuration and a developer experience that feels dated beside newer engines
  • SolrCloud depends on ZooKeeper, adding a component Elasticsearch removed years ago
  • Smaller mindshare now, so newer tutorials, hiring and integrations favour Elasticsearch
  • Considerably heavier than a purpose-built application search engine

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

Apache Solr

Free
  • Apache SolrFree
    • Full functionality
    • No usage limits
    • 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 Apache Solr if

  • You need lucene-based indexing.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want faceted search.
Apache Solr 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 Apache Solr or Microsoft Power Automate better?
Neither clearly leads. Apache Solr 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, Apache Solr or Microsoft Power Automate?
Apache Solr starts at Free and Microsoft Power Automate at Free.
Does Apache Solr or Microsoft Power Automate run on more platforms?
Apache Solr runs on Linux, Docker, Kubernetes, Self-hosted. Microsoft Power Automate runs on Web, Cloud, Desktop.
Can I use Apache Solr for free?
Both have a free tier, so you can try either at no cost before committing.
What is Apache Solr best used for?
Apache Solr is most often used for library, archive and catalogue search where faceting is central, long-lived enterprise deployments valuing stability over novelty, search requiring precise, explicitly configured relevance tuning. Of those, library, archive and catalogue search where faceting is central and long-lived enterprise deployments valuing stability over novelty are not what Microsoft Power Automate is typically brought in for.
What can Apache Solr do that Microsoft Power Automate cannot?
Apache Solr covers Lucene-based indexing, Faceted search, SolrCloud, Schema control. Microsoft Power Automate covers Automated flows, Instant flows, Scheduled flows, Desktop automation.

Answered from the vendors’ own pages

Apache Solr: Is Apache Solr free?

Yes, open source under the Apache Software Foundation.

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
Apache Solr: Solr or Elasticsearch?

Both are built on Lucene. Elasticsearch has the larger ecosystem and a friendlier API; Solr is very mature and strong on faceted search, and remains common in library and catalogue systems.

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
Apache Solr: Is Solr still maintained?

Yes, actively, as a top-level Apache project.

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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