Amsterdam.rb is the Ruby community in Amsterdam, the Netherlands. It's a monthly event where speakers share their knowledge, we all learn something and attendees can network.
Rails Girls is a global community with many local events. Rails Girls aims to open up technology and make it more approachable for girls and women. Rails Girls NL is the community under which events in the Netherlands are organized.
EuRuKo is the yearly European Ruby Conference. In 2019 it was held in Rotterdam, the Netherlands, organized by Stichting Ruby NL with the help from sponsors and volunteers.
ROSS conf Amsterdam gives open source software maintainers the platform to introduce their project to an audience of first time as well as existing contributors.