This will be my last submission to hackernews with Taskfort (the last submission did not receive too much attention). Taskfort is a self-hostable kanban tool with real-time collaboration courtesy of socket.io. My target audience is anyone who wants to have complete control over their data, wants to be more organized and can't rely on 3rd party web services. Licenses start at $35 / user for personal licenses. This includes a full year of support and upgrades. Once you purchase the license you will have full access to the source-code. Features on the roadmap are, making the mobile apps, and having AD + SAML integration. If you want to test out the full features before purchasing, you can create a free online account: www.taskfort.com

If you have any questions, let me know!

edit: Also as an aside, I've submitted my first application to YC. Show your support, if you want to see more applications like this in the future :)