How much is it? For Pay Free Forever
Where can I find it?
From the website, "Kanboard is a free and open source Kanban project management software." Kanboard is a simple application that allows you to model you and/or your team's work using the agile kanban methodology. Very feature rich. From the website "Visualize your work, Limit your work in progress to focus on your goal, Drag and drop tasks to manage your project, Self-hosted, Super simple installation". Available to download for free and install on a local server or even in a shared hosting environment. There is also a hosted version available for a reasonable fee.