– Save, manage, copy and share favorite links, websites, images and videos
– Free to use
– Public and Privacy options
– Search function
– Import and Export of bookmarks
– Various tools
– Profile page with avatars
– Easy to use
– Good Traffic- and Pagerank
– Long life
– Access from all devices
Not all sites meet all features. It is just an overview.
Bookmark4You – Remember your favorite pages of the internet. Bookmark and share interesting links for free!
Netvouz – Your Bookmarks online.
Delicious – Discover, remember, and showcase your passions from around the web.
SocialBoomarksSite – Save your favorite websites quick and easy.
Diigo – Collect and Highlight, then remember.
Blinklist – Discover, blink and share.
Video-Bookmark – Bookmark your favorite videos and websites of the internet.
BibSonomy.org – The blue social bookmark and publication sharing system.
StumbleUpon – StumbleUpon is a giant collection of the best pages on the Internet.
StartAid – StartAid is perfect for saving all your Bookmarks and Favorites Online.
Linkatopia – All Your Bookmarks and Favorites in One Place.
A1-Webmarks – Your personal entry point to the Web.
BukMark – Social Bookmarking.
Folkd – Save your links online, search social, and see what your friends like.
If you like to start your own Social Bookmarking portal, I would recommend you this ready to use php Social Bookmark Script or this Video Bookmark Script with video function. It includes all the important features, but is not too bloated. Also, the web application is easy to handle and customize. Furthermore this php script is hand coded, php 6 ready and designed under the newest security aspects.