I have been searching for a reference manager and mind mapper tool, and the only one I have found is Docear. It seems like an incredible tool, but I am a bit concerned with using it as it is no longer maintained or worked on by the developers. Therefore, some of the functionality, including online backup, is missing. Are there any alternative applications or software that can be used for reference management and mind mapping? I have used Mendeley in the past but it does not have a mind map tool.