Another good alternative, albeit search-based, is http://historio.us.

agraddy · on Dec 17, 2010

I recently switched to historious after seeing it here on HackerNews, and I've been very happy with it so far. It's a great bookmarking service; I'm surprised it hasn't received more attention with the debacle going on at Delicious.

stavros · on Dec 17, 2010

Thanks guys, the service is a bit backed up right now, with all the importers, but the site should be responsive and functional otherwise. I greatly appreciate everyone's support!

astrofinch · on Dec 17, 2010

And there's http://www.diigo.com/learn_more which allows you to annotate and add comments on the pages you bookmark and search only the annotations (or the full text if you want). They archive the pages you read as both HTML and as an image and have support for iOS and Android.

inovica · on Dec 18, 2010

I started to use historio.us a few weeks ago when mentioned on here and since then I've upgraded to the paid version. It really is simple to use and its really useful. To be honest I've not used any others, but for someone who used to drag and drop useful sites to my desktop this has been great.