
Calendly
Acuity Scheduling
TidyCal
zcal
SavvyCal
SetMore
Doodle
Cal.com (formerly Calendso) is the open source Calendly alternative.

n8n.io
SupaBricks
Pneumatic
Apache Airflow
Autocode
Process Street
Vercel
Company-wide apps and automations from minimal python scripts

Which is more popular?
Based on our record, Cal.com should be more popular than windmill.dev. It has been mentioned 60 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | cal.com | windmill.dev |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of windmill.dev yet.
Walkthroughs and reviews on video.
What can you do with Cal? | Cal.com Version 1.1 Launch | 10 new languages
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Cal.com and windmill.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


The honest read: if you're leaving Acuity because your business outgrew simple scheduling — you need deposits, add-ons, multiple staff and locations, and ideally a booking site you own — Opencals is built for exactly...
I tried using https://cal.com for a bit but ended up just switching over to https://zcal.co and it has been great so far. All these other scheduling tools end up trying to do too much and always seem to end up a bit...
We have no reviews of windmill.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Then for the component library, I was really into coss ui. I stumbled upon it randomly one day and loved it so much. My Nathan's AI project already had a UI heavily inspired by cal.com: send button, message suggestions... So when I saw... - Source: dev.to / 7 months ago
I keep coming back to what would have happened if I didn't have a strong technical understanding of how calendar technology works — the difference between local and cloud calendars, what an ICS feed is, why enterprise auth blocks... - Source: dev.to / 8 months ago
Plausible brought open source to web analytics. Cal.com did it for scheduling. Formbricks did it for surveys. PostHog did it for product analytics. Quackback does it for feedback collection. - Source: dev.to / 8 months ago
Windmill is an open-source developer platform that combines internal tools (like Retool), workflow automation (like Zapier/n8n), and job scheduling — all powered by scripts in TypeScript, Python, Go, Bash, or SQL. - Source: dev.to / 7 months ago
Windmill is an open-source developer platform that turns scripts into workflows and UIs. Built for developers who want to create internal tools and automate processes without the complexity of traditional platforms, Windmill has gained... - Source: dev.to / over 1 year ago
Founder of https://windmill.dev here which share many similarities with Maestro. > Maestro is a general-purpose, horizontally scalable workflow orchestrator designed to manage large-scale workflows such... - Source: Hacker News / about 2 years ago
When comparing Cal.com and windmill.dev, you can also consider the following products.

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Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.
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Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
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Optimize your schedule with custom booking pages and calendar integrations
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Pneumatic is an SaaS workflow management system designed to make business process management easy and accessible to everyone. Pneumatic emphasises ease of use, iterative development and continuous improvement of business processes.
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