I self-host Shaarli[1] with the 2004licious theme[2], as an emulation of early del.icio.us. It works really well - no database (it saves a single .php file), minimal interface, and it has an Android app. It also has tag and note support. I only wish it supported plain notes; you have to have a URL for each entry.

[1] https://github.com/sebsauvage/Shaarli

[2] https://github.com/Ruin0x11/shaarli-2004licious-theme

Oliver here from the Memex team.

glad you bring that up :) After we are finished with the current work on making Memex more stable and user friendly, we are working on shareable collections. With that you can share lists of websites, papers, notes and annotations with your peers, or co-curate those collections together.

Fantastic, I gave Memex a try and I really like, well done! I am also very much looking forward to the upcoming features, I think that such a bookmarking system is largely needed.

Any connection to darpa memex?

No that is an entirely different beast :)

Both projects took the inspiration for the name from the same thing though: https://en.wikipedia.org/wiki/Memex

delicious was purchased by pinboard.in their system is very similar.