# Cal.com

> Cal.com is an open-source scheduling platform that gives individuals and teams booking links, shared availability, round-robin and collective event types, routing forms, and workflow automation, and that also sells itself as scheduling infrastructure: a documented API and a set of React components (Atoms) that developers embed to put booking flows inside their own applications.

- Category: Scheduling & Booking (https://saastracker.org/categories/scheduling)
- Website: https://cal.com
- Starting price: $0 (free forever for one user); $12/user/mo for Teams on annual billing
- Free plan: Free forever for 1 user: unlimited event types and calendars, no booking cap, email and SMS notifications, 100+ integrations, mobile app and browser extension, Stripe and PayPal payments, two-way Salesforce and HubSpot sync, and Calendly event import.
- Free trial: 14 days on Teams and Organizations
- Founded: 2021, HQ: Fully remote, no physical headquarters (incorporated as Cal.com, Inc., United States), Ownership: Venture-backed
- Profile last reviewed: 2026-08-22
- Canonical profile: https://saastracker.org/products/cal-com

## Overview

Cal.com began life as Calendso, a weekend-scale open-source clone of Calendly, and turned into the most credible open alternative in the category. The hosted product covers the expected ground (unlimited event types, calendar conflict checking, buffers, payments, reminders) but the strategic bet is elsewhere: the company describes scheduling as infrastructure and wants to be the layer marketplaces, telehealth apps, and SaaS products call when they need users to meet users.

For a startup, the practical headline is that the individual plan is free forever with no usage cap, and it is not a crippled tier. One user gets unlimited event types and calendars, email and SMS notifications, over 100 app integrations, Stripe and PayPal payments, two-way Salesforce and HubSpot sync, and a one-click importer that pulls existing Calendly events across. Most solo founders never need to pay.

Paid plans start at $12 per user per month on annual billing for Teams, which is where round-robin, collective event types, routing forms, booking analytics, and branding removal live. Organizations at $28 adds sub-teams, a company subdomain, SAML SSO, SCIM, and the compliance posture (SOC 2, HIPAA, ISO 27001) that regulated buyers ask about. Cal.ai, the AI phone agent, is metered separately at $0.29 per minute of call time.

## How it works

1. You sign up (hosted at cal.com, or self-host from the public repository) and connect Google, Outlook, or Apple calendars. Cal.com reads across every connected calendar to compute real availability, writes confirmed bookings to one designated calendar, and applies whatever buffers, minimum notice, and daily or weekly limits you configure.

2. Event types are the unit of work: a 15-minute intro, a 45-minute demo, a paid consultation. Each carries its own duration, location (Cal Video, Zoom, Google Meet, Teams, phone, or in person), intake questions, payment settings, and confirmation requirements. Links can be embedded inline, as a floating widget, or behind a click trigger on your own site.

3. Teams layer shared availability on top. Round-robin distributes inbound meetings across reps, collective events require everyone to be free, and managed event types let an admin push a standard event definition down to the whole team. Routing forms qualify an inbound visitor with a few questions and send them to the right person or the right event type, which is the piece that makes Cal.com usable as an inbound sales router rather than just a personal link.

4. Beyond the app, Cal.com exposes an API and Atoms, React components that render availability pickers, booking forms, and calendar connection flows inside someone else's product. That is how a marketplace or a telehealth startup puts scheduling in front of its own users without building the calendar math itself. The main repository is MIT licensed, though the public community edition has enterprise features stripped out.

## Best for

Startups that want a genuinely free personal scheduling link with no usage cap, technical teams that value open source and self-hosting as an option, and product teams that need to embed booking flows into their own application through an API and React components rather than buying a standalone link.

## Not the right fit for

- Teams that want the safest, most boring, most widely recognized booking link; Calendly still wins on sheer familiarity with external recipients, and Cal.com ships fast enough that occasional rough edges are part of the deal.
- Solo users who need round-robin or routing but refuse to pay per seat; those features sit behind the Teams plan even for a team of two.
- Buyers who assume open source means free self-hosted parity; the community edition removes teams, organizations, insights, workflows, and SSO, and its own README recommends it for personal, non-production use.
- Anyone who wants scheduling bundled with task management and time blocking; Cal.com schedules meetings with other people and does not plan your day.

## Features

### Core booking

The scheduling fundamentals, most of which sit on the free tier.

- **Unlimited event types and calendars**: Even the free single-user plan allows unlimited event types and unlimited connected calendars, with no monthly booking cap, which is unusual at the zero-dollar end of this category.
- **Cross-calendar conflict checking**: Cal.com reads availability from every connected Google, Outlook, or Apple calendar and writes confirmed bookings to a single designated destination calendar, so personal and work conflicts both block time.
- **Buffers, notice periods, and limits**: Per-event padding before and after meetings, minimum booking notice, future booking horizons, and caps on meetings per day or week protect the calendar from being shredded by an open link.
- **Multiple meeting locations**: Each event type can default to Cal Video (the built-in conferencing product), Zoom, Google Meet, Microsoft Teams, phone, or a physical address, with attendee-chosen options where it makes sense.
- **Payments at booking**: Stripe and PayPal both connect on the free plan, so a consultant can charge for a session before it is confirmed without paying Cal.com anything.
- **Recurring and dynamic group links**: Recurring events (paid tiers) handle standing sessions, and dynamic group links let several colleagues be booked together by combining their usernames in a single URL.
- **Requires-confirmation and out-of-office**: Bookings can be held for manual approval, and an out-of-office setting forwards or blocks time when someone is away rather than silently accepting meetings.

### Team scheduling and routing

The Teams and Organizations layer, and the reason a GTM team pays.

- **Round-robin distribution**: Inbound meetings are spread across a pool of reps based on availability, which is the standard requirement for an inbound demo queue.
- **Collective event types**: Meetings that need several specific people (a founder plus an engineer, say) only offer slots where every required attendee is free.
- **Managed event types**: An admin defines an event type once and pushes it to every team member, so a whole sales team shares one standardized demo definition instead of drifting apart.
- **Routing forms**: A short qualifying form on the booking page sends visitors to different people or event types based on their answers; Organizations adds routing by custom variables.
- **Instant meetings**: On Organizations, a hot inbound lead can be connected to an available rep immediately rather than being asked to pick a slot next week.
- **Company subdomain and branding removal**: Teams removes Cal.com branding; Organizations adds a yourcompany.cal.com subdomain so every team link reads as your company rather than as a scheduling vendor.

### Automation and AI

Workflows plus the Cal.ai phone agent, which is metered separately.

- **Workflows**: Trigger-based automations send email or SMS reminders, confirmations, cancellation notices, and follow-ups at configurable offsets, and can be applied across multiple event types at once.
- **Cal.ai phone agent**: An AI voice agent that calls leads to book, remind, confirm, and reschedule, with transcripts and per-call analytics. It bills at $0.29 per minute (29 credits), with 750 credits per member per month included on Teams and 1,000 on Organizations; individual plans get none.
- **Webhooks**: Booking created, rescheduled, and cancelled events fire webhooks so downstream systems (CRM, data warehouse, internal tooling) can react without polling.
- **Booking analytics**: Insights on booking volume, no-shows, and event type performance arrive with the Teams plan; individual users get no reporting layer.

### Developer platform

The infrastructure pitch, and the clearest differentiator from Calendly.

- **Atoms (React components)**: Prebuilt, themeable React components for calendar connection, availability settings, event types, and booking forms, so a product team can ship in-app scheduling without writing timezone and conflict logic.
- **API v2**: A documented REST API covering bookings, event types, availability, schedules, and users, with OAuth clients for managing end users inside your own application.
- **Self-hosting**: The public repository can be deployed via Docker Compose, Railway, Render, Vercel, and similar hosts on Node 18 or later plus PostgreSQL 13 or later. The maintainers note it demands real server and database administration skill.
- **MIT-licensed community edition**: The public repository ships as a 100% MIT-licensed community edition with no open-core split, but with the enterprise features removed rather than merely locked; teams, organizations, insights, workflows, and SSO/SAML are hosted-plan features.
- **Embeds**: Inline, floating-button, and click-triggered embeds drop a booking flow onto a marketing site without a redirect to a third-party page.

### Integrations and platform reach

The app store and the surfaces Cal.com runs on.

- **App store with 100+ integrations**: Calendars, conferencing, payments, CRM, analytics, and automation apps install from an in-product store rather than requiring bespoke setup.
- **Two-way Salesforce and HubSpot sync**: Notably available on the free plan, which most competitors reserve for mid or high tiers; bookings write back to CRM records instead of living only in a calendar.
- **Calendly importer**: A one-click import brings existing Calendly event types across, which meaningfully lowers switching friction for a team already standardized on the incumbent.
- **Clients across every surface**: Web app plus iOS and Android apps, desktop builds for macOS, Windows, and Linux, and browser extensions for Chrome, Safari, Edge, and Firefox.
- **65+ languages**: Booking pages localize into more than 65 languages, which matters for consumer-facing or international booking flows.

## Use cases

- **Solo founder taking customer calls**: Every intro call costs four emails of back and forth, and the founder refuses to pay a subscription for something this basic while pre-revenue. Outcome: The free plan gives unlimited event types, unlimited bookings, calendar conflict checking, reminders, and Stripe payments for zero dollars, and the Calendly importer moves any existing links over in one click.
- **Early GTM hire building an inbound demo queue**: Demo requests land in a shared inbox, get assigned by hand, and the two AEs argue about who took the last one; unqualified traffic eats the same slots as real pipeline. Outcome: A Teams plan routing form qualifies the visitor with two or three questions, sends enterprise-shaped traffic to the senior AE, and round-robins the rest, with bookings syncing two ways to HubSpot or Salesforce.
- **Product engineer embedding scheduling in a marketplace**: The product needs providers and customers to book each other in-app; building calendar sync, timezone handling, and conflict detection is a multi-month detour from the roadmap. Outcome: Atoms and API v2 supply the calendar connections, availability logic, and booking forms as components, letting the team ship an in-product scheduling flow in days and keeping the data model inside their own app.
- **Security-conscious or regulated team**: A telehealth or fintech startup cannot send patient or customer scheduling data through a vendor with no compliance story, and self-hosting is on the table. Outcome: Organizations carries SOC 2, HIPAA, and ISO 27001 posture with SAML SSO and SCIM, and the open repository means an infrastructure team can inspect the code or run it themselves rather than trusting a black box.

## Pricing

Per-seat subscription with a free single-user tier, three paid tiers (Teams, Organizations, Enterprise), and a separately metered AI phone agent. Prices shown are annual billing; the vendor advertises 25% savings versus monthly.

- **Free**: $0 forever, 1 user. Unlimited event types, calendars, and bookings; Email and SMS notifications; 100+ app integrations, mobile app, browser extension; Stripe and PayPal payments; Two-way Salesforce and HubSpot sync; One-click Calendly event import. Genuinely the strongest free tier among the mainstream scheduling tools, and the CRM sync at zero dollars is close to unheard of.
- **Teams**: $12 per user, per month, billed yearly (25% cheaper than monthly). 1 team with shared availability; Round-robin, collective, and managed event types; Recurring events and customizable notifications; Routing forms and booking analytics; Cal.com branding removal, custom APIs; 750 Cal.ai credits per member per month. The first tier that makes sense for a GTM team; everything about distributing inbound meetings lives here.
- **Organizations**: $28 per user, per month, billed yearly (25% cheaper than monthly). Unlimited sub-teams and role-based permissions; Routing by custom variables; Company subdomain (yourcompany.cal.com); SAML SSO and SCIM provisioning; SOC 2, HIPAA, and ISO 27001 compliance; Instant meetings and domain-wide delegation; 1,000 Cal.ai credits per member per month.
- **Enterprise**: Custom annual pricing. Dedicated onboarding and engineering support; SLA and uptime guarantees; HRIS and directory integrations; Priority Slack and account support; Dedicated database.

Add-ons:

- Cal.ai call credits ($0.29 per minute (29 credits per minute)): Teams includes 750 credits per member per month, Organizations 1,000; individual plans include none and must buy credits outright. Extra credits are purchasable from the dashboard.

Billing notes:

- Annual billing is advertised at 25% below monthly on both Teams and Organizations; the $12 and $28 figures are the annual rates.
- Self-hosting the open repository is free but is not feature-equivalent: the community edition has teams, organizations, insights, workflows, and SSO/SAML removed, so a self-hosted deployment does not replace a Teams subscription.
- Cal.ai is priced per minute of call time, not per seat, so voice-heavy usage is a variable cost that will not show up in a seat-count spreadsheet.
- Enterprise is quote-only and annual; everything below it is fully self-serve with a 14-day trial and no sales conversation required.
- Prices are as of August 2026 and are quoted in US dollars.

Value assessment: Cal.com is the best free scheduling tier available in 2026 and one of the cheapest paid entry points, at $12 per user per month for round-robin and routing that competitors charge substantially more for. The open-source angle is real but should not be priced as a discount: the community edition deliberately excludes the team features, so a startup evaluating Cal.com is evaluating the hosted product like any other SaaS. Where it becomes genuinely cheap is the single-founder case, where the answer is zero dollars indefinitely, and the embedded-scheduling case, where Atoms replace an engineering project rather than a subscription.

## Strengths

- The free tier is unusually complete: unlimited bookings and event types, payments, and two-way CRM sync at no cost, which is a better deal than most competitors' entry paid plans.
- Genuine open source with a self-hosting path, which satisfies security reviews and gives a technical team an escape hatch that closed competitors cannot offer.
- Atoms and API v2 make Cal.com the only mainstream scheduling tool that plausibly doubles as infrastructure inside someone else's product.
- Routing forms plus round-robin at $12 per user per month is aggressive pricing for the inbound-lead-distribution job that mid-market rivals gate much higher.
- SOC 2, HIPAA, and ISO 27001 on Organizations plus SAML and SCIM mean the product can survive a real security review without an enterprise contract.
- Broad surface coverage: web, iOS, Android, desktop builds, four browser extensions, 100+ apps, and booking pages in 65+ languages.

## Limitations

- The open-source promise is narrower than it sounds; the public community edition strips the enterprise features and its own documentation calls it unsuitable for production, so self-hosting is not a free replacement for the paid plans.
- Round-robin, routing forms, analytics, and branding removal all require the Teams plan, so even a two-person startup pays per seat for basics that TidyCal or zcal hand over cheaply.
- The product ships quickly and covers a lot of ground, which shows up as occasional inconsistency between newer surfaces (routing, AI, insights) and the mature core booking flow.
- Cal.ai is priced per minute with no included credits on individual plans, which makes it easy to run up a bill that has nothing to do with the seat count you budgeted.
- Brand recognition is still well behind Calendly with external recipients, which matters slightly when the whole product is a link you send to strangers.
- Company scale is modest (roughly 11 to 50 employees per public profiles) relative to the breadth of the platform it is trying to maintain across apps, integrations, AI, and a developer API.

## Comparisons

- **Cal.com vs SavvyCal**: SavvyCal is the better link to send a human: the overlay calendar and ranked availability make the recipient's side of scheduling markedly less rude, and it is a focused, polished, bootstrapped product. Cal.com is the better platform: free for individuals, cheaper for teams, open source, and embeddable through Atoms and an API. Pick SavvyCal when the recipient experience is the point, and Cal.com when breadth, price, or developer access is.
- **Cal.com vs zcal**: Both lead with an unusually generous free plan, but they are generous about different things. zcal gives away branding-free design polish, unlimited links, and unlimited calendar connections, then charges $7 per seat for round robin and collective events. Cal.com gives away two-way CRM sync and 100+ integrations, then charges $12 per seat for the equivalent team layer. Design-led solo users and small teams often land cheaper on zcal; teams that will need routing forms, analytics, compliance, or an API belong on Cal.com.
- **Cal.com vs TidyCal**: TidyCal is the cheap, commerce-oriented option: a $29 one-time lifetime license covers paid bookings, session packages, subscriptions, and no-show fees forever, with no per-seat bill. Cal.com is the option that scales into a company, with routing forms, SAML, published compliance certifications, and a developer platform TidyCal does not attempt. Solo consultants selling sessions should look at TidyCal first; anyone who expects to add seats and a CRM should start on Cal.com.
- **Cal.com vs Motion**: These solve opposite halves of the calendar. Cal.com decides when other people can reach you; Motion decides what you do with the hours nobody booked, auto-scheduling tasks and projects around your meetings and replanning as things move. Motion includes a booking link, but it is a convenience feature, and at $19 to $29 per seat per month with no free plan it is a far bigger commitment. Teams that only need scheduling should buy Cal.com and spend the difference elsewhere.

## Implementation

- Setup time: Fifteen minutes for a working personal link: connect a calendar, set availability, create an event type. A team rollout with routing forms, managed event types, and CRM sync is realistically a few days of configuration and testing.
- Learning curve: Low for end users; the booking page is conventional. Moderate for admins, mostly because routing forms, managed event types, and workflows each have their own model and the documentation assumes you know which one you want.
- Onboarding: Fully self-serve with a 14-day trial on paid tiers, backed by extensive help docs and developer documentation. Dedicated onboarding and engineering support are reserved for Enterprise.
- Migration: A one-click Calendly event importer exists and works on the free plan, which is the single biggest reason switching is cheap. Moving from other tools is manual: recreate event types, repoint embeds, and update any links already published in email signatures or documentation. Self-hosters should assume a real infrastructure project, not a docker run.

## Platform, API & security

- Platforms: Web app, iOS and Android apps, Desktop apps for macOS, Windows, and Linux, Browser extensions (Chrome, Safari, Edge, Firefox), Self-hosted via Docker and other hosts, REST API v2 and React Atoms
- API: API v2 covers bookings, event types, availability, schedules, and users, with OAuth clients for managing end users inside a third-party application. Atoms provide React components for the same flows. Custom APIs are advertised from the Teams plan with additional APIs on Organizations.
- Compliance: SOC 2 (advertised on the Organizations plan), HIPAA (advertised on the Organizations plan), ISO 27001 (advertised on the Organizations plan), GDPR
- Data residency: Not published on the public pricing or platform pages; Enterprise offers a dedicated database, which is the closest published control.
- SSO: SAML SSO and SCIM provisioning on Organizations and above; HRIS and directory integrations on Enterprise.
- Security notes: Calendar access runs over OAuth to Google, Microsoft, and Apple. The open repository is the strongest security artifact on offer, since a buyer's engineers can read the code rather than take a trust page at face value.

## Support

- Channels: Email support (support@cal.com), In-app help, Priority Slack and account support on Enterprise
- Documentation: Extensive help docs plus separate developer documentation for API v2, Atoms, embeds, and self-hosting.
- Community: Large open-source community on GitHub around the calcom repository, plus a public changelog and an Open Startup page where the company publishes core metrics.

## Company

- Founded: 2021
- Founders: Peer Richelsen, Bailey Pumfleet
- Headquarters: Fully remote, no physical headquarters (incorporated as Cal.com, Inc., United States)
- Ownership: Venture-backed
- Employees: 11-50 (public company profiles, 2026)
- Funding: Roughly $32.4M disclosed, comprising a $7.4M seed in December 2021 and a $25M Series A in April 2022 led by 776, with Obvious Ventures, OSS Capital, On Deck, Remote First Capital, and Tribe Capital among the investors across rounds.

Funding history:

- Seed (2021): $7.4M. Participation included On Deck, Remote First Capital, and Tribe Capital.
- Series A (2022): $25M. Led by 776, with Obvious Ventures and OSS Capital participating.

Timeline:

- 2021: Founded by Peer Richelsen and Bailey Pumfleet as Calendso, an open-source scheduling project, and raises a $7.4M seed round in December.
- 2022: Rebrands to Cal.com and raises a $25M Series A led by 776, taking disclosed funding to roughly $32.4M.
- 2023: Ships the Teams and Organizations tiers along with routing forms and workflows, moving the product from personal link to team scheduling system.
- 2024: Pushes the infrastructure strategy with API v2 and Atoms, positioning Cal.com as embeddable scheduling for other products rather than only a destination app.
- 2025: Adds Cal.ai, an AI phone agent that books, reminds, confirms, and reschedules over voice, metered at $0.29 per minute.
- 2026: The public repository is presented as a 100% MIT-licensed community edition with enterprise features removed, clarifying the split between the open project and the commercial plans; the company states a mission to connect a billion people by 2031.

## Integrations

Google Calendar, Microsoft Outlook and Office 365, Apple Calendar, Zoom, Google Meet, and Microsoft Teams, Cal Video (built in), Stripe and PayPal, Salesforce (two-way sync), HubSpot (two-way sync), Slack, Zapier and webhooks, 100+ apps in the Cal.com app store

## FAQ

### What is Cal.com?

Cal.com is an open-source scheduling platform that provides booking links, shared team availability, round-robin and collective event types, routing forms, and workflow automation. It also sells itself as scheduling infrastructure, offering an API and React components called Atoms so developers can embed booking flows directly inside their own applications.

### Is Cal.com really free?

Yes, for one user, permanently. The free plan includes unlimited event types, unlimited calendars, unlimited bookings, email and SMS notifications, 100+ integrations, the mobile app and browser extension, Stripe and PayPal payments, and two-way Salesforce and HubSpot sync. Paid plans start at $12 per user per month for team features like round-robin and routing.

### How much does Cal.com cost for a team?

Teams is $12 per user per month billed yearly and Organizations is $28 per user per month billed yearly, both advertised as 25% cheaper than monthly billing, with a 14-day free trial. Enterprise is custom-priced and annual. Cal.ai voice calls are billed separately at $0.29 per minute.

### Can I self-host Cal.com for free?

You can, but not with feature parity. The public repository ships as a 100% MIT-licensed community edition with the enterprise features (teams, organizations, insights, workflows, SSO and SAML) removed, and the maintainers recommend it for personal, non-production use. Self-hosting also requires Node 18 or later, PostgreSQL 13 or later, and real server administration skill.

### How does Cal.com compare to Calendly?

Cal.com is cheaper, open source, and far more extensible, with a documented API and embeddable React components; Calendly is the more widely recognized link with a longer track record. Cal.com also offers a one-click Calendly event importer, which makes switching unusually cheap for teams already standardized on the incumbent.

### What is Cal.ai?

Cal.ai is Cal.com's AI phone agent. It places and takes natural-language calls to book meetings, send reminders, confirm attendance, follow up with leads who have not booked, and handle rescheduling, with transcripts and per-call analytics. It costs $0.29 per minute, with 750 monthly credits per member included on Teams and 1,000 on Organizations.

### Does Cal.com support round-robin scheduling?

Yes, on the Teams plan and above. Round-robin distributes inbound bookings across a pool of team members based on availability, and collective event types cover the opposite case where every named attendee must be free. Routing forms can send different visitors to different pools based on their answers.

### What are Cal.com Atoms?

Atoms are prebuilt React components that render calendar connection, availability configuration, event type management, and booking forms inside your own product. They exist so a marketplace, telehealth app, or SaaS product can offer in-app scheduling without building timezone, conflict, and calendar-sync logic from scratch.

### Is Cal.com HIPAA compliant?

Cal.com advertises SOC 2, HIPAA, and ISO 27001 compliance on its Organizations plan at $28 per user per month billed yearly, which also carries SAML SSO and SCIM provisioning. Teams and free users do not get that posture, so regulated buyers should budget for Organizations rather than assuming the lower tiers qualify.

### Who founded Cal.com and how is it funded?

Cal.com was founded in 2021 by Peer Richelsen and Bailey Pumfleet, originally under the name Calendso. It has raised roughly $32.4M, a $7.4M seed in 2021 and a $25M Series A in 2022 led by 776, and operates as a fully remote company with a headcount in the 11 to 50 range per public profiles.

## Editorial verdict

Cal.com is the default recommendation for a startup that needs scheduling and does not want to think about it: the free tier is the most complete in the category, the paid team tier is genuinely cheap for round-robin and routing, and the Calendly importer removes the usual excuse for staying put. Be clear-eyed about the open-source halo, though; the community edition exists to be inspected and tinkered with, not to replace the subscription, and anyone planning to self-host their way out of paying for team features will be disappointed. Buy it for the price and the API, not the license.

## SaaSTracker awards

- Momentum (Scheduling & Booking, Summer 2026): "Open-source scheduling that doubles as booking infrastructure for other products, compounding through its developer ecosystem."

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Source: SaaSTracker (https://saastracker.org), an independent editorial project. This profile is compiled from public information, carries no peer reviews or paid placement, and was last reviewed 2026-08-22. Awards are judged on published criteria: https://saastracker.org/methodology