Medium API - Official Medium API
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Bytes - Your weekly dose of JavaScript
restdb.io - restdb.io lets you create databases and REST APIs quickly. Development databases are free. Powerful web-based and mobile-friendly data management.
Characters - Characters makes it easy for writers, designers and developers to access special characters. They are easily found and copied to your clipboard, either as html code or as the character itself.
RemoteStorage - An open protocol for per-user storage OWN YOUR DATA