Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Datahike - A durable datalog database adaptable for distribution.
Urban Jungle Street View - Explore the world through Google Street View: Jungle Mode
Datomic - The fully transactional, cloud-ready, distributed database
Google NightWalk - An audio Streetview tour around Marseille
Matisse - Matisse is a post-relational SQL database.