At Etalab, we believe that communities are as important as digital tools and resources. It's the users and contributors that give purpose to the tools, by channeling real impact. In order to mobilize and empower these communities, we host events regularly: open data camps, hackathons, workshops, conferences, meet ups... Organizing these events can be very time and energy consuming without the right tools. Conference and call for proposals managers, ticketing software, platforms to manage hackathon projects : this is our collection of open source event management tools.