OpenProject is a project management software from Germany. They are open-source and can be self-hosted, but also offer on cloud solutions. They are built around tasks which can be viewed in different ways, for example in a Kanban board, a timeline or in a calendar. These tasks can be assigned to people and created by everyone. OpenProject can be integrated into other services, and you can build your own integrations with their API.

Zenkit Projects is a project management software from Germany. They focus on eas-of-use without making it hard for advanced users by providing different interfaces for different users. You can create goals and tasks to reach those goals, create timelines and deadlines for certain tasks, integrate the timelines into your favorite calendar service and improve the experience with Zapier integrations. A live report of all projects is always available, and you can see the workload of each user to balance it evenly.