Notix.co - NOTIX is an audience re-engagement service based on web and in-app push notifications that work for both desktop and mobile devices.
Datahike - A durable datalog database adaptable for distribution.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
MySQL - The world's most popular open source database
Appcelerator - Native apps, Mobile APIs, Real-time analytics, One Platform.
Matisse - Matisse is a post-relational SQL database.