EmailTracker.cc - Free Email Tracker for Gmail. Close More Deals with Comprehensive Email Tracking, Automated Follow-up Reminders, and Detailed Click Insights

Lua - Powerful, fast, lightweight, embeddable scripting language

Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Google Fit SDK - Google Fit is an open ecosystem that makes it easy to store, access, and manage fitness data.

MailTime - Go through your email as fast and easy as text-messaging

Accountable - Accountable is a platform designed to help organizations manage HIPAA compliance.