Try Cal.com: Interactive Product Demo
Walk through an interactive demo of Cal.com, an open-source scheduling platform for booking meetings without the back-and-forth email. See how event types, availability, and calendar connections work without writing any code.
What is Cal.com?
Cal.com is a scheduling platform that lets people book time with you through a link, so you skip the back-and-forth of finding a slot over email. It checks your connected calendars for conflicts, shows only the times you're actually free, and confirms the meeting once someone picks a slot. The model is familiar if you've used scheduling tools before. What sets Cal.com apart is that it's open source.
Being open source has real consequences. You can run Cal.com on the hosted version at cal.com, or self-host the whole thing on your own infrastructure, which gives you control over where booking data lives. That appeals to teams with privacy requirements or those who want to customize the product beyond what a closed tool allows. The codebase is public, so the community contributes features and integrations.
The day-to-day building blocks are event types and availability. An event type defines a kind of meeting: its length, where it happens, what questions a booker answers, and any buffer time around it. Availability rules set the hours you'll accept bookings. Cal.com also handles team scheduling, like round-robin assignment and collective events where several people need to be free. For documentation and onboarding, embedding a Supademo walkthrough next to your Cal.com booking page lets someone see how a process works before they commit to a call.
How to get started with Cal.com
- 1
Create an account or self-host
The quick path is signing up at cal.com, the hosted version with a free tier. If you need full control over your data, the self-hosted route is the alternative, though that means running the application yourself. For getting familiar with how scheduling works, the hosted version is the simplest place to start.
- 2
Connect your calendar
Link your calendar, whether that's Google Calendar, Outlook, or another supported provider. This is what lets Cal.com check for conflicts and avoid double-booking. Once it's connected, your existing commitments are automatically treated as busy, so bookers only ever see times you're genuinely free.
- 3
Set your availability
Define the hours and days you'll accept bookings. You can set a standard weekly schedule and create different availability rules for different kinds of meetings. This is also where you'd add buffer time between calls so back-to-back bookings don't leave you with no gap to breathe.
- 4
Create an event type
An event type is a bookable kind of meeting. Set its length, where it takes place, like a video link or a phone call, and any questions the booker should answer when they schedule. Each event type gets its own link, so a 15-minute intro and a 60-minute deep dive can be entirely separate.
- 5
Share your booking link
Send your link directly, add it to an email signature, or embed the booking flow on your website. When someone books, both sides get a calendar invite and a confirmation, and the slot is reserved. You can place the link near a Supademo walkthrough so visitors explore the product, then book a call from the same page.
Who is Cal.com most useful for?
Cal.com suits anyone who books meetings regularly, but a few groups get particular value from the open-source angle.
Developers and technical teams are drawn to it because the code is open and the product is built to be extended. You can self-host it, modify it, build on its API, or embed the booking flow directly into your own application. For a company that wants scheduling inside its product rather than as an external link, that flexibility is the main reason to choose Cal.com over a closed alternative.
Privacy-conscious organizations use the self-hosted option to keep booking data on their own servers. For teams in regulated industries, or any company that would rather not route customer scheduling data through a third party, hosting it yourself removes that concern entirely.
Sales and customer-facing teams use the round-robin and collective scheduling to route inbound meetings across reps or coordinate calls that need several attendees. Recruiters, consultants, and support teams use it for interviews, client calls, and onboarding sessions. Solo professionals and freelancers use the hosted free tier as a straightforward booking link. A common setup across these cases is placing an interactive Supademo demo near the booking page, so a prospect can explore the product first, then book a call in the same flow.
Calendly is the most widely used scheduling tool and the name many people reach for by default. It's polished and easy to get started with. The trade-off against Cal.com is openness: Calendly is closed source with no self-hosting, so you can't run it on your own infrastructure or modify it. Teams that want control over their data or the code tend to prefer Cal.com.
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Acuity Scheduling, owned by Squarespace, leans toward service businesses that book appointments, like salons, clinics, and coaches. It handles intake forms, payments, and packages well. It's less developer-oriented than Cal.com and not open source, so it suits a business booking client appointments more than a team that wants scheduling built into its own product.
Microsoft Bookings comes included with many Microsoft 365 plans, so for an organization already on that stack there's no extra cost or new tool to adopt. It's a reasonable fit if your team lives in Outlook. It doesn't offer the customization or self-hosting that Cal.com does, so the choice usually comes down to whether you value convenience or flexibility.
SavvyCal puts more focus on the booker's experience, letting them overlay their own calendar on your availability to find an overlap quickly. It's a thoughtful, well-designed closed-source tool. Cal.com competes on a different axis: open source, self-hostable, and built to be extended, which matters more to technical teams than booking-page polish alone.
FAQs on Cal.com
Commonly asked questions about Cal.com. Have more? Reach out and our team will be happy to help.
Is Cal.com free to use?
Cal.com has a free tier on its hosted version, which covers individual scheduling with a booking link and calendar connections. Because the project is open source, you can also self-host it at no licensing cost, paying only for the infrastructure you run it on. Paid plans add team features, like round-robin routing and more advanced scheduling, along with priority support.
What does it mean that Cal.com is open source?
Cal.com being open source means its code is publicly available, so anyone can inspect it, contribute to it, or run their own copy. In practice this gives you two things a closed tool can't: you can self-host the platform on your own servers, and you can modify or extend it to fit your needs. It also means a community contributes features and integrations, not just the core company.
Can I self-host Cal.com?
Yes, self-hosting is one of the main reasons teams choose Cal.com. You can run the entire platform on your own infrastructure, which keeps booking and calendar data under your control rather than on a third party's servers. Self-hosting does mean you handle the setup, updates, and maintenance, so it's better suited to teams with technical resources than to solo users.
How is Cal.com different from Calendly?
Cal.com and Calendly do the same core job: scheduling meetings through a booking link. The main difference is that Cal.com is open source and Calendly is not. With Cal.com you can self-host the platform and modify the code, while Calendly is a closed hosted service. For teams that care about data control or want to customize the tool, that distinction is usually the deciding factor.
Which calendars does Cal.com connect to?
Cal.com connects to the major calendar providers, including Google Calendar and Microsoft Outlook, along with other supported options. Connecting a calendar is what lets Cal.com check for conflicts and keep you from being double-booked. You can link more than one calendar, so personal and work commitments are both accounted for when someone tries to book time.
Does Cal.com support team scheduling?
Yes, Cal.com handles team scheduling beyond individual booking links. It supports round-robin assignment, which distributes incoming bookings across team members, and collective events, which find a time when several people are all free. These are typically part of the paid team plans and are useful for sales teams routing inbound calls or coordinating interviews.
Can I embed Cal.com on my website?
Yes, Cal.com can be embedded directly into a website rather than only shared as a link. You can place the booking flow inline on a page or have it open as a popup, so visitors schedule without leaving your site. Pairing the embed with an interactive Supademo demo on the same page lets someone explore the product first and then book a call in one flow.
Does Cal.com have an API?
Yes, Cal.com offers an API, which fits its developer-focused approach. You can use it to manage bookings, event types, and availability programmatically, or to build scheduling directly into your own application. Combined with the open-source codebase, the API is a big part of why technical teams pick Cal.com when they want scheduling as a feature inside their own product.