Docker - Docker is an open platform that enables developers and system administrators to create distributed applications.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
Amazon ECS - Amazon EC2 Container Service is a highly scalable, high-performance container management service that supports Docker containers.
Geary - Geary is an email application built for GNOME 3.
Marathon - Marathon is a production-grade container orchestration platform for Mesosphere.
The Bat - The Bat! is a secure desktop email client for Windows, designed to protect your correspondence against third-parties and to save your time.