Best open-source alternatives to Doodle

Cal.diy is the community edition of Cal.com, presented as a fully open-source scheduling platform intended for people who want to run their own scheduling stack. The README emphasizes that it is self-hosted only, aimed at personal and non-production use, and that it removes enterprise/commercial code from the upstream project. It is positioned for users who want full control over scheduling infrastructure without relying on a hosted service or license key. The project is built with Next.js, tRPC, React, Tailwind CSS, Prisma, and Daily.co. Getting started requires a Node.js runtime, PostgreSQL, and Yarn, with options for local development via Docker Compose, a Gitpod workspace, or manual setup. The README also documents seeded test accounts, database migration/deployment commands, and environment-variable configuration for local and production-style setups.

Rallly is a self-hostable scheduling tool designed to help people organize group meetings without long email threads. It lets users create meeting polls so participants can indicate when they are available, making it easier to choose a date and time that works for everyone. The project is positioned for friends, colleagues, and teams that need a simple way to coordinate events. The application is built with Next.js, Prisma, tRPC, and TailwindCSS, and the README includes instructions for running a local development environment. It relies on a Docker-based database setup for local installation, and the project points users to separate self-hosting documentation and configuration options for running their own instance. The code is released under the GNU AGPLv3 or later, indicating an open-source, self-hosted deployment model.

Bitpoll is a web application for creating and running polls about dates, times, and general questions. It is a rewritten version of the Dudel project and is built with Django on the backend. The project is aimed at users who need simple scheduling and question polling with flexible participation rules. It supports anonymous or named votes, optional registration before voting, private event polling for invited participants, and poll URLs that can be chosen manually or generated automatically. Bitpoll can be deployed either with Docker or by manually cloning the repository and installing dependencies in a Python virtual environment. The README also describes production use with LDAP login, uWSGI, and Sentry-based error reporting.

calrs is an open-source scheduling platform written in Rust for people and teams that want to self-host their booking workflow. It lets users connect one or more CalDAV calendars, define bookable meeting types, and share booking links for public, private, team, or dynamic-group scheduling. The project is aimed at users who want an alternative to hosted scheduling services while keeping control over their stack. Its README emphasizes CalDAV-based availability checks, booking confirmations, rescheduling, team management, admin controls, and a web dashboard for managing sources, event types, and bookings. The software is positioned as lightweight and self-hostable, with no Node.js, no PostgreSQL, and no subscription required.

Online service for planning an appointment or make a decision quickly and easily: Make a poll, Define dates or subjects to choose, Send the poll link to your friends or colleagues, Discuss and make a decision.