Open source/Scheduling/Comparisons

Checked 2026-11-15 · Primary sourcescalcom/cal.diy · 50,053 ★ MIT

Cal.com vs Calendly

Cal.com Cloud costs less across solo ($0 unlimited) and standard Teams ($12 vs $16/seat), and beats Calendly’s ~$15k/yr Enterprise SSO floor up to 44 seats — just do not count on MIT cal.diy for team self-hosting.

Cal

Cal.com

Open-core Cloud + MIT personal repo (cal.diy)

Winner: Teams & <45 SSO seats
Solo $0 unlimitedTeams $12/uOrg SSO $28/u
Choose Cal.com if...
You want unlimited solo event types, multiple calendars & workflows for $0/month.
Your multi-seat team needs round-robin & routing forms ($12/u vs Calendly $16 at any headcount).
You need SAML SSO for up to 44 seats without a $15,000/yr contract floor.
Watch out for...
Public MIT repo cal.diy omits Teams, Routing & SSO; official README flags it for personal non-prod use.
Try Cal.com Cloud Pricingcal.diy repo

Partner link (rel="sponsored") · Checked against cal.com/pricing (2026-11-15).

CL

Calendly

Closed-source incumbent SaaS

Winner: 55+ SSO orgs
Free: 1 event typeTeams $16/seatEnt $15k/yr+
Choose Calendly if...
You run 55+ sales seats needing negotiated Enterprise SSO pricing (~$15k/yr floor).
You want Calendly’s bundled meeting notes and calendar tooling on paid tiers.
Procurement already approves Calendly as a turnkey SaaS vendor.
Watch out for...
Free plan limits you to 1 event type & 1 calendar; no self-hosted option exists at any tier.
View Calendly Official PricingBuilderStack Cal.com Audit

Standard reference link · Checked against calendly.com/pricing (2026-11-15).

Interactive Seat & License Calculator

Compare Cal.com Cloud, Calendly SaaS, and cal.diy across team sizes, billing cycles, and SSO floors.

Active team seats10 seats
1 (Solo)15304560 (Org)
Annual billing
Toggle off for monthly rates ($15 vs $12; $20 vs $16)
Require SAML SSO / SCIM
Switches to Cal.com Org ($28/u) vs Calendly $15k/yr floor
Include $12/mo Linux VPS
Applies baseline server cost to cal.diy personal self-host
Cal.com CloudTeams ($12/u)
$120/mo

Round-robin assignments, collective events & routing forms.

Calendly SaaSTeams ($16/seat)
$160/mo

Teams tier required for round-robin routing & forms.

cal.diy MIT Self-HostOmitted for teamsBlocked for teams
Not viable

README warns cal.diy is personal/non-prod and strips Teams, Routing & SSO.

Save $40/mo ($480/yr) on Cal.com Cloud

6-Dimension Audit Matrix

Hover any source pill to inspect exact primary quotes & verification URLs.

DimensionCal.comCalendly
Open Source License
MIT License
MIT (cal.diy) + closed commercial Cloud

You can modify MIT cal.diy, but commercial team features (Teams, Routing, SSO) live exclusively in closed-source Cal.com Cloud or Enterprise.

100% Closed-Source SaaS

No public repository or self-hosted source code at any pricing tier.

Self-Hosting Viability
Self-Host Docs
Personal / non-prod only (cal.diy)

Requires Node >=18, PostgreSQL >=13 and Yarn; fine for single-person demos, not intended for team production.

Cloud only (no self-host)

Managed multi-tenant cloud only; custom data residency is handled inside vendor agreements.

Solo Free Tier
Cal.com PricingCalendly Pricing
$0 — Unlimited event types

Multiple calendar connections, unlimited event types, basic workflows and Stripe booking payments are included free.

$0 — Capped at 1 event type

More than one active event type or extra calendar requires upgrading to $10/seat/month Standard.

Team Round-Robin & Routing
Teams Compare
$12/user/mo ($15 monthly)

Teams tier bundles round-robin assignments, collective scheduling, webhooks and routing forms from $12/u.

$16/seat/mo ($20 monthly)

Round-robin and Salesforce/HubSpot routing sit in Calendly Teams at 33% higher per-seat cost.

SAML SSO & SCIM Gate
Enterprise Floors
$28/u self-serve Org tier

Add SAML SSO, SCIM and sub-teams transparently per user — no minimum seat contract wall.

~$15,000/yr Enterprise floor

SSO and audit logs require Enterprise sales quote (starts around 50 seats / $1,250/mo equivalent).

API, Embeds & White-Label
Cal.com Docs
Custom subdomain & React Atoms

Remove Cal branding on Organizations ($28/u) or embed scheduling flows natively via API/SDK.

Hosted widget; minimal branding control

Best suited for out-of-the-box links and embeds rather than custom-owned booking infrastructure.

Frequently Asked Questions

Verified against primary license texts, docs, and current pricing tables.

Can my team self-host Cal.com for free under the MIT license?

No for production team workflows. While calcom/cal.diy is MIT-licensed, its official README warns it is strictly for personal, non-production use and removes Teams round-robin, Routing Forms, Workflows and SAML SSO.

When is Cal.com Cloud cheaper than Calendly?

Cal.com Cloud wins for 1 user ($0 unlimited event types vs Calendly 1-event cap) and across all standard team seat counts ($12/u vs $16/seat annual Teams). With SAML SSO enabled ($28/u), Cal.com stays cheaper than Calendly’s ~$15,000/yr Enterprise floor up to 44 annual seats.

What does Calendly do better than Cal.com?

Calendly requires zero setup, bundles meeting assistance tools on paid tiers, holds long-standing enterprise procurement approvals, and becomes price-competitive above ~55 seats on negotiated Enterprise contracts.

Do I need PostgreSQL to test self-hosted cal.diy?

Yes. The calcom/cal.diy README specifies Node.js 18+, PostgreSQL 13+, Yarn, NEXTAUTH_SECRET, CALENDSO_ENCRYPTION_KEY and individual OAuth keys for calendar/video providers.

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