SpatialRead
NNScholar
SliceRead.pro
SciSpace
Zotero
Mendeley
Chirpz Agent
Employs AI to revolutionize your research experience.

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

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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| Website | openread.academy | cal.com |
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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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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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 OpenRead and Cal.com. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

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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...
Recommendations tracked on public social media and blogs since March 2021.

Tracking OpenRead since Apr 2023.
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 / 7 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
When comparing OpenRead and Cal.com, you can also consider the following products.

Quickly understand complex research papers with AI. SpatialRead is a nonlinear research paper reading tool where you can highlight complex ideas and get simplified explanations on an infinite spatial canvas. Bring your own keys (BYOK).
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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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Search papers, read PDFs, verify citations, and run AI research agents in one desktop workspace for literature reviews, evidence tracking, and writing.
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Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
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The agent-native AI reading app. Slice any article into clean cards from multiple angles—ideas, claims, takeaways, quotes.
Compare SliceRead.pro to OpenRead or Cal.com:

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