Calendly is the best-known scheduling tool. Tymeslot is the open-source, EU-based alternative - first-class CalDAV sync, booking pages without third-party trackers, and a free plan that isn't capped at a single event type.
Updated September 15, 2026
Calendly is a polished, proprietary US SaaS with a huge integration marketplace, a safe default for sales teams that live inside Salesforce and HubSpot. Its trade-offs are a free plan limited to one event type and one calendar, per-seat pricing that climbs with team size, and no way to self-host or keep data in the EU. Tymeslot covers the same core scheduling job (shareable booking links, two-way calendar sync, automatic video links, reminders) but is open-source, self-hostable, EU-based, and treats open calendar standards (CalDAV) as first-class.
The differences that tend to matter when you're choosing between them.
Tested on September 15, 2026: we loaded Calendly's own demo booking page and a Tymeslot booking page in a fresh browser, without accepting any cookies, and recorded every host contacted. The Calendly demo page
Sources: Calendly pricing Connecting a calendar to Calendly Calendly and iCloud Calendar Calendly data storage and transfers Calendly and Stripe Calendly booking page languages
Tymeslot's core is open source under the GNU AGPLv3 and self-hostable end to end - run it on your own server with full feature parity. Calendly is closed SaaS with no self-hosting option.
Tymeslot syncs two-way with any CalDAV server - Nextcloud, Radicale, Baïkal, Zimbra, mailbox.org - as a first-class citizen alongside Google and Outlook. Calendly stops at Google, Outlook and Exchange, and has taken no new iCloud connections since 2024.
Tymeslot booking pages load no advertising pixels or third-party analytics: visits are counted by our own self-hosted, cookieless analytics, and connected calendars only ever expose busy/free - never event details. Ideal for healthcare, legal and other privacy-sensitive work.
Tymeslot is built by an EU company in Estonia and hosted in Germany, or self-host it anywhere you like. Calendly is a US SaaS with a DPA but no customer-controlled EU data residency.
Tymeslot's free plan includes unlimited event types and calendar connections. Calendly's free plan caps you at a single event type and a single calendar.
Tymeslot Pro is a flat €9/month. Calendly bills per seat, so cost scales with every person you add.
Calendly nailed the category: drop a link, let people book, sync it to your calendar. For a lot of teams that is enough, and there is no reason to switch for switching's sake.
The friction shows up at the edges. The free plan's single event type pushes most real users onto a paid seat quickly, and per-seat pricing means a five-person team pays five times over. If you keep your calendar on Nextcloud, Fastmail, mailbox.org or iCloud rather than Google or Microsoft, Calendly can't sync it two-way. And because it is closed US SaaS, your booking data lives on Calendly's infrastructure with no self-hosting or EU-residency option - a real blocker for healthcare, legal and public-sector work.
Tymeslot is built for exactly those edges: open-source and self-hostable, EU-based, CalDAV as a first-class citizen, booking pages without third-party trackers, and a free plan with unlimited event types. You keep the parts of Calendly you liked - the clean booking flow, two-way sync, automatic video links, reminders - without the lock-in.
No tool wins for everyone. Here's how they split.
Choose Tymeslot if…
Choose Calendly if…
Calendly pricing in USD. Per-seat tiers shown at the annual rate; month-to-month is higher. Prices checked on September 15, 2026. Tymeslot prices in EUR; VAT may apply. See Calendly's current pricing
Yes - Tymeslot covers the same core job (shareable booking links, two-way calendar sync, automatic video links, reminders, embeds) and adds open-source code, self-hosting, first-class CalDAV, EU hosting and a free plan with unlimited event types. It is the closest open-source Calendly alternative for privacy-conscious users and self-hosters.
There is no automatic Calendly importer, but recreating event types takes only a few minutes - each one is just a duration, availability window and a few options. Once created, update your booking links wherever you share them and you're live.
Tymeslot has a free plan with unlimited event types, and Pro is a flat €9/month (€90/year). Calendly's free plan is limited to one event type, and its paid plans are billed per seat ($10/seat/mo Standard and up, billed annually), so cost grows with team size. Self-hosting Tymeslot is free.
Yes. Tymeslot treats CalDAV as a first-class calendar provider - Nextcloud, Radicale, Baïkal, Zimbra, mailbox.org and other CalDAV servers get the same two-way sync as Google and Outlook. Calendly connects only Google, Outlook and Exchange calendars, and has not accepted new iCloud connections since August 2024.
Yes. Tymeslot's core is open source under the GNU AGPLv3 and self-hostable via Docker, Cloudron or Railway, with full feature parity - including payments and automation that are paid add-ons on the managed cloud. Calendly cannot be self-hosted.
I put out the first version of Tymeslot two days ago. I built it because the scheduling tools I tried were either dated or too heavy to run myself.
Luka Breitig
January 04, 2026 · 3 min read
Free plan available. No credit card required. Setup in 5 minutes.