Momentum - Agile goal and performance management
Museum of Websites - Curated gallery of how internet companies changed over time
Exposure New Tab - Get a beautiful photo from Exposure in every new tab
Endangered Sounds Museum - Nostalgic sounds from the past
New Tab Startup Quotes - Inspiring startup related quotes in every new Chrome tab.
Mixergy - The YC Stories - How YC companies - Airbnb, Dropbox and more - Got Started