After trying many different things over the years, I wrote this: <a href="http://onemodel.org" rel="nofollow">http://onemodel.org</a> (yes I plan to move to https sometime). You can think of it something like a personal wiki + emacs org-mode, very efficient, keyboard-oriented, using postgres, but with a much larger vision than today's features, including sharing (linking/copying securely) between instances, and computability of the info for things like anki-like features. Self-hosted now but open to hosting for others. The most current code is in github (AGPL). Comments/questions very welcome, preferably via the mailing list; be patient if my answers are slow. The lists are currently low-volume, and the announcements list should always be.<p>(It can store files, but isn't especially smooth about it yet. For personal notes of all kinds, it is <i>the</i> most efficient, effective, flexible thing I know of. The FAQs link to a discussion comparing it with emacs org-mode and others. It has fulltext search, some finicky but very functional import/export, a nice numbered-outline export to text, and a journal/activity log.)<p>I have noted to look at Notion, and Trillium, to see how much they overlap and if we can collaborate. I have been quite slow lately though, hoping to get more done sometime relatively soon.