Pusher Beams - Send push notifications programmatically at scale
Pushover - Real-time notifications on your Android, iPhone, iPad, and Desktop
Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.
Pushbullet - Pushbullet - Your devices working better together
Truepush - Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.
Pushsafer - Send push notifications easy and safe to ios, iphone, ipad, android, windows, devices