Wekan is an open-source kanban board system designed to facilitate task management and team collaboration. It allows users to organize projects using boards, lists, and cards, offering a visual overview of workflows. Wekan supports various features such as card assignments, due dates, card attachments, and real-time collaboration, making it suitable for a wide range of project management needs. As an open-source tool, it can be customized and self-hosted according to user preferences.