Visual Beat - Interactive music video
Tremendous - Tremendous is a customer and employee loyalty platform that allows companies to reward their customers for surveys promotions and referrals.
The Lucid Realm - Listen to music in 3D
Giftbit - Buy, send and track digital gift cards for your reward and incentive programs.
Google Music Lab - Interactive experiments that use the Web Audio API
Rybbon - Send digital e-gift cards as marketing incentives or rewards with Rybbon, which integrates with Marketo, HubSpot, SurveyMonkey, and Qualtrics.