Our team has written and used Skygear internally since last year. We did use Parse before but we were disappointed by its performance. And thus we built our own backend as a service and recently launched at an open source conference. We would love to hear more comment from you and make it a better open source project.
Other Technology we used: Docker, Kubernetes, PostgreSQL
Benefits:
High performance
Multi-functional backend for web and mobile
Easy to launch and scale
SDKs available in Javascript (JS), iOS and Android
https://skygear.io/
(We provide dashboard and cloud code features for developers.)
Please Please Please let me know more your thoughts on this