Revere - Remember names and details about the people you meet
Google Analytics by SumoMe - The easiest way to see your Google Analytics
Notifuse - A 1-to-many notification API that's simple to use
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
Sweet Alert - Sweet Alert is a replacement for Javascipt's "Alert".
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.