Planio is a hosted Redmine project management platform founded in Berlin, Germany in 2013, integrating issue tracking, Wiki, Git/SVN, and a helpdesk with German data centers and GDPR compliance from about EUR 3 per user/month.
YouTrack is an issue tracking and project management tool launched by JetBrains in 2009, headquartered in Prague, Czech Republic, known for keyboard-first operation, agile boards, a built-in knowledge base, and workflow automation, with cloud and self-hosted deployment.
OpenProject is the well-known open-source project management software from Berlin, Germany, released under GPLv3 in 2012 with 100,000+ installations, offering Gantt charts, Scrum/Kanban boards, time tracking and BIM, available self-hosted or in the cloud with a free community edition.