
Calendly
Acuity Scheduling
TidyCal
SavvyCal
Doodle
zcal
SimplyBook.me
Cal.com (formerly Calendso) is the open source Calendly alternative.
SignUpGenius
SameTeam
Doodle
Wejoinin
Coordara
Trello
SignupReady
Coordinate group events in second. No signups, no apps, just one shared link.

Which is more popular?
Based on our record, Cal.com seems to be more popular. It has been mentioned 60 times since March 2021.
Website, pricing, platforms and company facts side by side.
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SharedTask.ai
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| Website | cal.com | sharedtask.ai |
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| Company | — | Startup from the United States · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Cal.com yet.
SharedTask stops group text chaos by giving you one shareable link for event coordination. Create tasks, share the link, and participants claim items in real-time - no signups required. How It Works: Create event → Add tasks → Share link → Everyone claims tasks → Coordinate effortlessly Key...
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
Overall verdict
Why this product is good
Recommended for
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 SharedTask.ai. 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...
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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 / 8 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 / 9 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 / 9 months ago
Tracking SharedTask.ai since Oct 2025.
When comparing Cal.com and SharedTask.ai, you can also consider the following products.

Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
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SignUpGenius is a tool for scheduling events, sending out invitations, and managing your respondents all in one place.
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Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
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Plan events without guest accounts, app downloads, or ads. SameTeam helps churches, schools, PTAs, nonprofits, sports teams, and community groups organize RSVPs, signups, potlucks, and volunteers with one simple link.
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Optimize your schedule with custom booking pages and calendar integrations
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Make meetings happen. With Doodle, scheduling becomes quick and easy.
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