Scrumblr is an open source scrum tool that allow to manage an agile sprint board with real-time collaboration support. It is built using node.js, websockets (using socket.io), CSS3 and jquery. If features an interesting user interface that tries to simulate a physical board.
scrumblr is a shared simple whiteboard where you can post post-its. The whiteboard can be split so that you can manage a simple equivalent of a taskboard. The posts-its are available in three colors and small color tags can be added to the post it to give some additional visual information about it. You can also use this tool for retrospectives. The interface is supposed to be intuitive, so you have to discover the available features.
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