Notifuse - A 1-to-many notification API that's simple to use
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
One Call Now - One Call Now's message notification delivers automated phone calls, SMS text messages and emails within moments to any group.
Statsbot - Connect your database, let Statsbot generate data relationships from your database automatically, and get your first insights in a matter of minutes.
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
StatsGlitch - Insights and Alerts to grow your business. Powerful Google Analytics and Search Console companion.