Overview
Tymeslot is an open-source meeting scheduling platform built with Elixir, Phoenix and LiveView. It provides Calendly-style booking pages with calendar integration, automatic video room creation, and multi-timezone support, and can be self-hosted or used via its managed cloud. It runs on the BEAM/OTP runtime with PostgreSQL.
Where it falls short of Calendly
- Younger and smaller project than Cal.com, with a more limited integration and app ecosystem.
- Licensed under the Elastic License 2.0, which is source-available rather than OSI-approved open source and restricts offering it as a competing managed service.
- Fewer calendar providers and payment options than mature commercial tools.
- Self-hosting requires an Elixir/OTP and PostgreSQL setup, which is less familiar to many ops teams.
We list the gaps honestly so you can decide if the trade-off is worth owning your data.
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