Mind maps can be a very useful tool, not only for helping us think, but also for taking notes, inspiring ideas, organizing your writing, recording conference ...etc. XMind is an open source mind-mapping software tool, similar to FreeMind. Like FreeMind, it helps users easily create mind map diagrams, while offering a much wider range of colors. In addition to a free version, XMind has a commercial version with additional functions that users can access with a monthly subscription.