1. Cal.com Scheduling
Open-source, developer-friendly Calendly alternative with self-hosting, a powerful API and routing/round-robin on a low-cost Teams tier.
Try Cal.com free →This is the honest shortlist of scheduling tools you can run at $0, with the real limits spelled out.
Every entry below separates a real free plan from a time-limited trial, lists the actual limits (seats, items, sends or storage) and the trade-off you accept at $0. Limits are summarised from public plans at the time of writing.
| Tool | Free offer | What you get free | Best for |
|---|---|---|---|
| Cal.com | Free plan | 1 user, unlimited event types, payments, Cal Video, workflows | developers |
| Doodle | Free plan | unlimited group polls (10-slot cap), ads, 1 booking page | group-polls |
| HubSpot Meetings | Free plan | 1 scheduling page, calendar sync, contact creation, HubSpot branding | hubspot-users |
| OnceHub | Free plan | 1 user, 1 booking link, core scheduling | lead-routing |
| Setmore | Free plan | up to 4 users, 200 appts/mo, payments, email reminders | small-business |
| SimplyBook.me | Free plan | 50 bookings/mo, 1 provider, 1 custom feature | service-businesses |
| Square Appointments | Free plan | 1 location/user, online booking, payments (processing fees apply) | retail-pos |
| TidyCal | Free plan | unlimited bookings, 1 calendar connection, payments | budget |
| YouCanBookMe | Free plan | 1 calendar, 1 booking page, YCBM branding | teams |
| Zoho Bookings | Free plan | 1 staff, 1 calendar, core scheduling | zoho-ecosystem |
| Appointlet | Free plan | up to 5 members, 25 meetings/mo, 1 page, video integrations | sales-demos |
| Calendar.com | Free plan | Free tier | time-analytics |
| Calendly | Free plan | 1 event type, 1 calendar connection, video integrations | individuals |
| GReminders | Free plan | 100 email reminders/mo, 1 calendar, 1 event type, branding | reminders |
| Microsoft Bookings | Free plan | bundled in Business Standard, Business Premium, E3/E5, F3 and more | microsoft-365 |
| Picktime | Free plan | unlimited appointments, 3 users, 2 locations, classes | free-tier |
| Reclaim.ai | Free plan | 2 calendars, 3 habits, basic analytics, scheduling links | ai-time-blocking |
| Acuity Scheduling | 7-day free trial | trial only | service-businesses |
| Book Like A Boss | free trial | trial only | freelancers |
| Chili Piper | free trial | trial only | enterprise-sales |
| SavvyCal | free trial | trial only | individuals |
| vcita | 14-day free trial | trial only | service-smb |
Open-source, developer-friendly Calendly alternative with self-hosting, a powerful API and routing/round-robin on a low-cost Teams tier.
Try Cal.com free →The best-known group poll tool: find a time that works for many people, plus booking pages and 1:1 links on top.
Try Doodle free →Free meeting scheduler tightly integrated with HubSpot CRM; round-robin and team scheduling unlock with Sales Hub.
Try HubSpot Meetings free →Routing-focused scheduling (formerly ScheduleOnce) with forms, qualification and round-robin distribution plus AI chat handoff for revenue teams.
Try OnceHub free →Free-forever appointment booking with a generous free tier (up to 4 users, 200 appts/mo) and inexpensive Pro upgrade for SMS and video.
Try Setmore free →Feature-rich booking system for service businesses with a marketplace of custom features (POS, deposits, memberships, intake).
Try SimplyBook.me free →Booking tied to Square's POS and payments ecosystem: free single-user plan, integrated checkout, no-show protection for in-person businesses.
Try Square Appointments free →Budget Calendly alternative famous for its one-time lifetime deal: simple booking links without a recurring subscription.
Try TidyCal free →Highly customizable booking pages with strong branding control and email workflows, popular for teams and education/recruiting use cases.
Try YouCanBookMe free →Affordable appointment scheduling that plugs into the Zoho ecosystem (CRM, Meeting, Invoice) with round-robin and resource booking.
Try Zoho Bookings free →Simple, flat-priced meeting scheduling with unlimited bookings and integrations, aimed at sales and demo booking.
Read more about Appointlet →Calendar app with built-in appointment scheduling, time analytics and team distribution in one place.
Read more about Calendar.com →The category-defining meeting scheduler: clean booking links, deep calendar/CRM integrations and a generous free tier that made automated scheduling mainstream.
Read more about Calendly →Scheduling plus automated SMS/email/voice appointment reminders and AI notetaking, popular with financial advisors and healthcare.
Read more about GReminders →Booking bundled into Microsoft 365: zero extra cost for qualifying business/enterprise plans with native Teams and Outlook integration.
Read more about Microsoft Bookings →Unusually generous free appointment scheduling with multi-service, multi-location and class management at no cost.
Read more about Picktime →AI calendar that auto-schedules tasks, habits and meetings around your priorities, with smart 1:1 and scheduling links.
Read more about Reclaim.ai →These aren't free forever, yet a no-cost trial lets you evaluate them first:
Pick on the constraint that bites first: the cap, the missing automation, or the vendor branding. A free plan that covers your real workload beats a paid plan you barely use. Save trials for tools with no free plan, when you're already close to buying.
17 tools here offer a permanent free plan you can keep using at $0 — including Cal.com, Doodle and HubSpot Meetings. Acuity Scheduling, Book Like A Boss, Chili Piper, SavvyCal and vcita only offer a time-limited free trial, not a standing free plan.
Free tiers trade away scale or polish. The usual limits are usage caps (seats, contacts, sends, storage), a reduced feature set, vendor branding or watermarks, and gated automations. Each pick above lists its specific limit and catch where the data names one.
We include a tool only when its own pricing or an independent source confirms a real free plan or trial — no assumed free tiers. Details, limits and facts are drawn from the vendors' plans and the reviews cited in Sources below.
For early-stage or low-volume use, often yes — several plans here carry real work until you hit a seat, contact or usage cap. Past that point the paid tier usually pays for itself.
Free-plan limits and facts above are drawn from these vendor pages and independent reviews: