able to grab a certain concept or an author from the notes I took and insert the full bibliography (of that concept or author) as a footnote in my term paper or thesis, so I wouldn't have to type the whole thing over again (and could also revise those I left out…….)

Searching through the existing notes by keywords or tags

functions which could manage and publish bibliographies into different academic styles, like Endnote does

record the history of how many times a certain concept/bibliography has been referenced in which paper