Notifuse - A 1-to-many notification API that's simple to use
Google Analytics by SumoMe - The easiest way to see your 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.
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.