Polymail - Native email app for email productivity.

Kinovea - Kinovea is a video player for sport analysis

Airmail - Airmail is a lightweight and lightning fast mail client for Mac.

Video Coach - Video Coach is a tool that helps users analyze and improve their sports activities by recording videos of training and practice.

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

PhysMo - PhysMo is an open-source (free!