Startup Idea: Software For Organizing Thoughts/Writings

Startup idea to develop a software solution that combines aspects of blogging platforms, mind-mapping software, task tracking, and content management systems for better research and idea organization. The software could host capabilities akin to a word processor, excel directives and advanced search feature through tagging system.

Software that organized thoughts/writing. It would have to be a combination of a blogging platform and mind-mapping software, task tracking. It needs the power of a word processor (partially) and some excel. then also content management system.

I do research and have lots of ideas that I don't have a good way of tracking/notes/organizing. It is frustrating. Using a file system doesn't work/seems old. I have tried out using a hidden blog, but it doesn't quit flow together. Right now I have 100s of documents that don't connect to each other.

It could just be google docs integrated with something else. If there was way to integrate word/excel into the flow that would be ideal. It needs some sort of tagging system/search feature as well.