Updated on 6 December 2017
DrupalCon is an international educational event that brings together the people who use, develop, design, and support the Drupal platform. The event features dozens of curated sessions and panels from some of the most influential people and brightest minds within the Drupal community and beyond, as well as countless opportunities for networking, code sprints, informal conversations, and more. DrupalCon is the premiere conference to hone your Drupal skills, connect with the community, and learn about the future of web technologies happening on the Drupal platform.
DrupalCons sessions are archived on YouTube and available for free.
Drupal Dev Days
Yearly event - 2 to 6 July 2018, Lisbon
Drupal Developer Days is an event organized by the Drupal community which gathers people who contribute on the progress of Drupal from all over the world.
Yearly event - 31 May - 3 June 2018 - Utrecht, Netherlands
DrupalCamp is an annual gathering of people loving, learning and discussing the open-source content management system, Drupal. Sessions cover topics ranging from the basic to the more complex modules, a bunch of Drupal 8 sauce, front-end, use-cases, doing business with Drupal and plenty more.
Not really a Drupal event, but one of the biggest event about open source.
3 & 4 February 2018 | Brussels, Belgium
Local or topic based groups: https://groups.drupal.org/
IRC and Slack
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