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

Tuple
Warp Terminal
replit
Ghostty
Vibe Pocket
Coding Rooms
Kite
Terminal sharing and collaborative coding as easy as sharing a URL, powered by our open-source tech!

Which is more popular?
Based on our record, Cal.com seems to be a lot more popular than Devsession. While we know about 60 links to Cal.com, we've tracked only 2 mentions of Devsession.
Website, pricing, platforms and company facts side by side.
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| Website | cal.com | devsession.is |
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What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
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 Devsession. 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 Devsession 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 / 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
I will even give away the devsession.is domain (which gives you the cool: my.devsession.is/bobs-session url scheme) if I deem the effort serious and trust that it will be maintained in the long run. Source: over 4 years ago
If someone else wants to build this and maintain it as a service I will give this all the support I can. I tried (https://devsession.is/) and did not have the bandwidth. Source: over 4 years ago
When comparing Cal.com and Devsession, 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.
Compare Calendly to Cal.com or Devsession:

Tuple is a Mac-only remote pair programming tool for discerning developers
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Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Compare Acuity Scheduling to Cal.com or Devsession:

The terminal for the 21st century. Warp is a blazingly fast, rust-based terminal reimagined from the ground up to work like a modern app.
Compare Warp Terminal to Cal.com or Devsession:

Optimize your schedule with custom booking pages and calendar integrations
Compare TidyCal to Cal.com or Devsession:

Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
Compare replit to Cal.com or Devsession: