Syften - Better social media keyword alerts
Pusher Beams - Send push notifications programmatically at scale
mention - Media monitoring made easy with Mention. Create alerts on your name, brand, competitors and be informed in real-time of any mention on the web and social networks
Push Notification Preview - A simple tool for previewing push notification copy
Google Alerts - Google Alerts will send you email or RSS updates of the latest relevant Google results (web, news...
Ultimate Push Notifications by Ecomfit - Retarget customers and protect abandoned cart to boost sale