[stevekemp]

A simpler alternative, for technical users, might be to store your bookmarks as a plaintext file under revision control.

You can then present them via javascript to allow filtering, searching, and tags.

https://github.com/skx/bookmarks.public

[drdaeman]

Well, a note-taking solution (be it a plaintext file or a simple database) can perfectly handle the task of keeping URLs, but I think the point of bookmarking service are social aspects and/or content archival and indexing. Otherwise there's no reason to just not stick to what browsers have built-in for ages.