DataTip - The fastest way to store & access your critical datapoints.
Get Stories - All your user data in one place
HeyForm - Paperless data collection with better data insights
Mila - Sort your inbox contacts to your marketing and sales tools
Immutable.js - Immutable persistent data collections for Javascript which increase efficiency and simplicity. - immutable-js/immutable-js
GoSquared People Analytics - One place to understand your users