Open alternatives2
Open-source apps that replace MeetUp and EasyChair
Indico is a web-based tool for planning and running events, from conferences with abstract reviews and registration to meetings and room booking. It is aimed at event organizers and institutions, and it can be extended with plugins.
Gathio is a simple website for creating and sharing events, with a focus on keeping users' data private. It can be used on the public hosted version or run by anyone on their own server.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for events & meetups? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
How Open Source Everything works