Lunchclub - Curated 1:1 professional connections
Virus Cafe - Make a friend in 2 minutes
Caliber - IM for LinkedIn. Instantly chat with your business contacts.
Upto App - A shared calendar to share and organise your plans with your friends.
Until - Until lets you create beautiful widgets to count down the days until meaningful events in your life.
Serendipity - Serendipity is a PHP-powered weblog engine which gives the user an easy way to maintain a blog.