Softwr

APIs · head to head

Pusher vs Windmill

Pusher logo

Pusher

APIs

Realtime messaging API for building live features into apps

From
Free
Rated
-
Full reviewWebsite
Windmill logo

Windmill

Automation Integration

Open-source developer platform for building scripts, workflows, and internal apps

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Pusher the free Sandbox plan is capped at 100 concurrent connections, which is quickly outgrown by production apps.; Windmill free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.
  • They diverge on capability: Pusher covers Pub/sub channels, Windmill covers Script-to-workflow engine.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Pusher and Windmill actually diverge.

Attributes where Pusher and Windmill differ
AttributePusherWindmill
Pricing modelfreemiumopen-source
Platformsweb, ios, android, apiweb, api, linux, windows, mac
CategoryAPIsAutomation Integration

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 Pusher

  • Pub/sub channels
  • Presence channels
  • Client libraries
  • Webhooks
  • 24/7 monitoring
  • Priority support

Only in Windmill

  • Script-to-workflow engine
  • Auto-generated UIs
  • Self-hosted deployment
  • Git sync
  • SSO support
  • Audit logs

What people use each for

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

Pusher

  • Adding live chat to a web or mobile appnot Windmill
  • Showing realtime presence of online usersnot Windmill
  • Pushing live notifications or dashboard updatesnot Windmill
  • Building collaborative features without managing WebSocket serversnot Windmill

Windmill

  • Turning ad-hoc scripts into scheduled jobs and APIsnot Pusher
  • Building internal tools from existing Python/TypeScript codenot Pusher
  • Self-hosted automation for engineering teamsnot Pusher
  • Orchestrating multi-language workflowsnot Pusher

Where each one falls short

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

Pusher

  • The free Sandbox plan is capped at 100 concurrent connections, which is quickly outgrown by production apps.
  • Pricing jumps sharply between tiers (e.g. $49 to $99 to $299), leaving few options for teams with moderate but growing usage.
  • Priority support with faster response times costs an additional $3,000/month on top of plan pricing.

Windmill

  • Free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.
  • Compute unit and seat-based pricing (developer vs. operator seats, worker compute units) adds pricing complexity beyond a flat monthly fee.
  • Email triggers are capped at 100/day on the free tier, limiting event-driven use cases without upgrading.
  • Smaller ecosystem of pre-built integrations compared to more established automation tools like n8n.

Pricing, plan by plan

Pusher

Free
  • SandboxFree
    • 200k messages/day
    • 100 concurrent connections
    • Standard support
  • Startup$49/month
    • 1M messages/day
    • 500 concurrent connections
  • Pro$99/month
    • 4M messages/day
    • 2,000 concurrent connections
  • Business$299/month
    • 10M messages/day
    • 5,000 concurrent connections
    • Premium support

Windmill

Free
  • Free / Open-sourceFree
    • Unlimited executions
    • Self-hosted deployment
    • Max 10 users with SSO
  • Enterprise$120/month
    • Unlimited executions and workspaces
    • Uncapped SSO seats
    • 24/7 priority support (3-hour response)

Which should you pick?

Choose Pusher if

  • You need pub/sub channels.
  • You want to start without paying.
  • You work on web, ios, android, api.
  • You also want presence channels.
Pusher review

Choose Windmill if

  • You need script-to-workflow engine.
  • You want to start without paying.
  • You work on web, api, linux, windows, mac.
  • You also want auto-generated uis.
Windmill review

Questions people ask

Is Pusher or Windmill better?
Neither clearly leads. Pusher starts at Free and Windmill at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Pusher or Windmill?
Pusher starts at Free and Windmill at Free.
Does Pusher or Windmill run on more platforms?
Pusher runs on web, ios, android, api. Windmill runs on web, api, linux, windows, mac.
Can I use Pusher for free?
Both have a free tier, so you can try either at no cost before committing.
What is Pusher best used for?
Pusher is most often used for adding live chat to a web or mobile app, showing realtime presence of online users, pushing live notifications or dashboard updates, building collaborative features without managing websocket servers. Of those, adding live chat to a web or mobile app and showing realtime presence of online users are not what Windmill is typically brought in for.
What can Pusher do that Windmill cannot?
Pusher covers Pub/sub channels, Presence channels, Client libraries, Webhooks. Windmill covers Script-to-workflow engine, Auto-generated UIs, Self-hosted deployment, Git sync.

Answered from the vendors’ own pages

Pusher: What does Pusher cost?

Pusher Channels offers a free Sandbox plan (200k messages/day, 100 connections) and paid plans starting at $49/month for Startup, scaling up through Pro, Business, and several higher tiers up to $1,199/month, plus custom Enterprise pricing.

Source
Windmill: What does Windmill cost?

Windmill's Free and Open-source edition is $0/month for self-hosted use with unlimited executions, while Enterprise starts at $120/month with unlimited workspaces and uncapped SSO seats, priced further by developer/operator seats and compute units.

Source
Pusher: Can I change or cancel my plan?

Yes, customers can log into the dashboard and adjust their plan at any time, including upgrading, downgrading, or cancelling.

Source
Windmill: Is there a free plan and what are its limits?

The free self-hosted plan supports unlimited executions but caps SSO at 10 users, workspaces at 3, groups/permissions at 4, and email triggers at 100 per day.

Source
Pusher: How is usage metered?

Usage is measured by concurrent connections and messages per day; a message counts both the publish and each delivery, so publishing one message to 50 subscribers counts as 51 messages.

Source
Windmill: How is usage metered on Windmill Enterprise?

Enterprise usage is metered through seats (developer seats at $20/month, operator seats at $10/month) and compute units, e.g. $100/month for 2 standard-worker compute units.

Source
Windmill: What happens to a self-hosted Windmill deployment if the company shuts down?

The pricing page addresses this directly as an FAQ topic, noting that self-hosted applications built on the open-source edition can continue running independently of Windmill the company.

Source
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