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| Technology | Version | First seen |
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| JavaScript Frameworks & Libraries2 | ||
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| Frontend Build Tools & CSS2 | ||
| 3.32.2 | 17 Oct 2026 | |
| Web Servers, Languages & Backend Frameworks2 | ||
| 1.24.0 | 17 Oct 2026 | |
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| Email Marketing & Lead Capture1 | ||
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| Transactional Email1 | ||
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| Fonts & Icon Fonts1 | ||
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| Live Chat, Helpdesk & AI Support1 | ||
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| Reviews, Ratings & Social Proof1 | ||
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| Security, WAF & Bot Protection1 | ||
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smtp.google.comns-686.awsdns-21.netns-1772.awsdns-29.co.ukns-456.awsdns-57.comns-1185.awsdns-20.orggoogle-site-verification=BDS_StAmf3ohWxFmq0wQgtVk0OlziYWG0x5cvd8rbSQgoogle-site-verification=n0Bz-ep_T0KGVEsH_JoLZxAjjzqrQNC8RJdcF968_q8v=DMARC1; p=none;# Kalendar > Free scheduling tool. Unlimited users, unlimited event types, no per-seat fees. Calendly replacement you can self-host. Kalendar is a scheduling and booking platform built as a Calendly replacement. It's completely free — no paid tiers, no per-user fees, no caps on bookings or event types. It's part of the Founding.dev platform: software you own, not software you rent. ## What Kalendar Does - Shareable booking pages for individuals and teams - Unlimited event types and booking links - Calendar integrations for availability sync - Automated confirmation and reminder emails - Self-hosting option: deploy on your own infrastructure - Unlimited users — no per-seat tax as your team grows ## Pricing Kalendar is free. No paid tiers. Unlimited users, unlimited bookings, unlimited event types — no credit card, no upgrade wall. On the Deploy tier via Founding.dev, you can self-host Kalendar on your own infrastructure and own the code and data outright. ## Why Teams Switch vs. Calendly — Calendly charges per user per month. One team member costs you nothing on Kalendar. Ten do too. vs. Savvycal — Same per-user model. Kalendar has no seat pricing at any scale. vs. Cal.com — Open-source but still vendor-hosted SaaS unless you self-deploy. Kalendar is free and self-hostable out of the box. ## Ownership Via the Founding.dev platform, you can deploy Kalendar on your own server. You own the code, the booking data, and the infrastructure. No vendor access, no lock-in. ## About Founding.dev Kalendar is built and maintained by [Founding.dev](https://founding.dev) — an AI SaaS Replacement Platform. Businesses use Founding.dev to replace per-seat SaaS subscriptions with custom software they own. Customers have reduced SaaS spend by up to 70%. Founder: [Talha Masood](https://www.linkedin.com/in/talha-masood-a347a069/) — Forbes Technology Council member, previously co-founded Remotebase (120+ people, 85,000+ vetted engineers). Backed by [Antler](https://showcase.antler.co/company/foundingdev-8383fdf7). ## Key Links - [Kalendar Home](https://kalendar.work) - [Privacy Policy](https://kalendar.work/privacy-policy) - [Terms of Service](https://kalendar.work/terms-of-service) - [Get Started with Founding.dev](https://founding.dev/get-started)
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