
Calendly
Acuity Scheduling
TidyCal
SavvyCal
Doodle
zcal
SimplyBook.me
Cal.com (formerly Calendso) is the open source Calendly alternative.
MoleSeek
Apollo.io
Hunter.io
Cognism
Vainu
Clearbit
Argorant
Finland's most comprehensive B2B prospecting tool. Over 500,000 companies, financials, decision-maker contacts and tech stacks. Export leads directly to your CRM.

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.
|
|
FD
FlowDial
|
|
|---|---|---|
| Website | cal.com | flowdial.io |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

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 FlowDial yet.
Walkthroughs and reviews on video.
What can you do with Cal? | Cal.com Version 1.1 Launch | 10 new languages
More videos
No FlowDial videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Cal.com and FlowDial. 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 FlowDial 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
Tracking FlowDial since Aug 2026.
When comparing Cal.com and FlowDial, 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 FlowDial:

B2B lead generation platform that builds current, verified customer contact lists with live discovery, website signal checks, and opportunity scoring.
Compare MoleSeek to Cal.com or FlowDial:

Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Compare Acuity Scheduling to Cal.com or FlowDial:

Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.
Compare Apollo.io to Cal.com or FlowDial:

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

Find all the email addresses related to a domain
Compare Hunter.io to Cal.com or FlowDial: