(unofficial) xiaomi push server sdk for ruby - 非官方小米推送服务端 Ruby SDK
iOS, Android and Windows Phone Push Notifications made easy!!
Finally, push notification framework that does not hurt. currently supports Android (FCM) and iOS...
A lightweight, efficient Ruby gem for interacting with Whatsapp Cloud API.
Android Push Notification in Ruby: The fastest client for FCM (Firebase Cloud Messaging)
fir.im(betaqr.com) command-line interface