Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
JSONBase - API based JSON storage
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
JSON Server - Get a full fake REST API with zero coding in less than 30 seconds. For front-end developers who need a quick back-end for prototyping and mocking
AnyPresence - AnyPresence is an Enterprise Backend as a Service for mobile app development and API augmentation.
JSON Placeholder - JSON Placeholder is a modern platform that provides you online REST API, which you can instantly use whenever you need any fake data.