The seemingly simple idea of managing bookmarks is surprisingly more nuanced; I have managed to find at least five main types of bookmarking software. In this note I'll cover them. The types are:

*. Bookmark bar
*. Social bookmarking
*. Forum
*. Personal archive
*. Annotation

= 1. Bookmark bar 
The simplest and the most widely deployed method of bookmarking is the bookmark bar. It's found in all browsers. In desktop ones it does indeed look like a horizontal bar of bookmarks. On mobile devices it's more like a menu, but I still call it a bookmark bar for the sake of this anthology.

In browser

= 2. Social bookmarking 
Delicious and Pinboard descendants

Descriptions, tags, sharing

[[Betula]]

If we remove the social aspect from social bookmarking, we are still left with something usable. Such software would be more complex than a bookmark bar, and there is demand for such software. Betula started as such, [[https://shaarli.readthedocs.io/en/master/ | Shaarli]] is still like that. I don't think it's worth to make a separate category. It's in the middle between bookmark bar and social bookmarking.

= 3. Forum
Reddit Digg

Social bookmarking + upvoting + threaded comments + karma + drama

= 4. Personal archive
Pocket, Instapaper

Anti-social

Littlest accent on metadata

= 5. Annotation 
Hypothesis. Zotero?