Kan.bn is an open-source project developed as a customizable alternative to Trello, offering both self-hosted and cloud options. The main discussion points include the choice of Next.js for its development, user feedback on missing features like limits on work-in-progress (WIP) and markdown support, and comparisons with existing tools like Kanboard and Linear. The creator is actively seeking feedback and ideas for improvement, emphasizing the importance of community involvement in open-source projects. The project allows users to create their personalized task management experience, focusing on speed and flexibility.