Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
Unmark - Hosted bookmark management app
MeowChat - MeowChat is kind of instant messaging platform that offers the fun and entertaining way to the strangers across the globe to come and interact with the other strangers like them.
Shaarli - Shaarli is a minimalist link sharing software you can install on your own website
Emerald Chat - An omegle alternative on the web with several enhanced features.