Flourish - Powerful, beautiful, easy data visualisation
StatCounter - StatCounter is a simple but powerful real-time web analytics service that helps you track, analyse and understand your visitors so you can make good decisions to become more successful online.
Visualoop - Dribbble for infographic & data visualization artists
Histats - Start tracking your visitors in 1 minute!
Datamatic.io - Datamatic - WordPress for data visualizations
AFSAnalytics - AFSAnalytics.