Quizterra - Create, publish and monetize interactive content on your website. Quizterra is a functional quiz making software with great designs, wide functionality, and free embed.
Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.
Zembula - Zembula enables marketers to create and embed interactive experiences that are optimized for conversion.
Adobe Audience Manager - Adobe Audience Manager is a data management platform that integrates online and offline data to deliver a unified view of all your audiences
4screens - 4screens is an interactive content creation platform enabling marketers to create engaging interactive content and social experiences.
Google Audience Center - 3 votes and 6 comments so far on Reddit