Virus Cafe - Make a friend in 2 minutes
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Upto App - A shared calendar to share and organise your plans with your friends.
Bigtent - BigTent is a web-based organization and communication portal for groups.
Serendipity - Serendipity is a PHP-powered weblog engine which gives the user an easy way to maintain a blog.
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.