Mobilizon

Rallly is a self-hostable meeting poll app for scheduling group meetings by collecting participants' availability.

Indico is a web-based event management platform for conferences, meetings, room bookings, and related workflows.

pretalx is a conference planning tool for managing call for participation, reviews, scheduling, and speaker communication.

An open source event attendance and ticket reservation system for event organizers.

An open-source event ticketing and management platform for selling and managing event tickets online, with both self-hosted and cloud deployment options.

An event management tool tailored to Free and Open Source Software conferences.

Bitpoll is a Django-based poll application for dates, times, and general questions.

OpenSlides is a free, web-based presentation and assembly system for managing and projecting agenda items, motions, and elections.

An open-source event management and ticketing backend built with Django and Django Ninja.

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.

Collaborative platform for managing, sharing and reserving gifts between friends and family.

HumHub is an open-source social networking and collaboration platform for intranets, knowledge bases, and community spaces.