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.

MeisterTask is a project management software from Germany. They allow you to manage your projects and track the progress and development of them from getting the idea to completion. This is done via a kanban project board, task scheduling (including calendar integration), time tracking and a personal agenda. If you need insides about your project, you can either view the current status of the project in a dashboard or generate a report. In addition, you can automate tedious tasks and integrate their API into your systems.