Időzíts is built with and on top of exceptional open-source software. We're grateful to the communities that make this possible.
We use, bundle, or redistribute the following open-source projects. Each one is listed here with its license so you know exactly what powers your scheduling.
A community-maintained blocklist of throwaway email domains used to protect booking pages from bots and bad actors. We download this list at build time and use it to screen booking submissions.
A lightweight CalDAV and CardDAV server that powers calendar storage for Időzíts. Bundled in our Docker stack and run locally on your behalf.
Python client library for CalDAV, used by our API to create, read, and manage calendar events on the CalDAV server.
Python library for parsing and generating iCalendar (RFC 5545) data. Used for building calendar event objects that sync with clients like Google Calendar and Apple Calendar.
The core Python web framework powering the Időzíts API. Handles booking creation, availability queries, webhooks, and all backend logic.
The Python SQL toolkit and ORM used for all database operations — bookings, clients, availability rules, and billing records.
The Node.js web framework that serves the Időzíts frontend, handles server-side rendering of booking pages, and manages authentication flows.
The utility-first CSS framework used to style the entire Időzíts interface — dashboard, booking pages, and this marketing site.
This list covers libraries we directly use, bundle, or redistribute. Transitive dependencies are listed in our pyproject.toml and package.json files.