This document lists various social bookmarking sites from 2015. It includes popular sites like Delicious, Reddit, and StumbleUpon as well as lesser known bookmarking services such as Diigo, Folkd, Sonico, and BookmarkTracker. In total, the document provides 22 URLs for social bookmarking sites that were active in 2015.

1. Social Bookmarking Site 2015
http://delicious.com
http://www.reddit.com/
http://www.diigo.com/
http://www.folkd.com/
http://www.sonico.com/
http://www.bookmarktracker.com/
http://www.cloudytags.com
http://www.bibsonomy.org/
http://slashdot.org/
http://www.stumbleupon.com/
http://www.newsvine.com/
http://youmob.com/
http://www.dropjack.com/
http://linkarena.com/
http://www.designfloat.com/
http://www.startaid.com/
http://www.dealigg.com/
http://www.bookmark4you.com/
http://www.sitejot.com/
http://www.social-bookmarking.net/
http://givealink.org/
http://fwisp.com/