Ghost - Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.
SnapXam - Your personal math tutor
Vivoom - Make Every Video Look Better
Math42 - Formula calculator for IOS
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Pratilipi - Amazon's Kindle Direct Publishing for Indian Languages