Gmvault - Backup the emails in your Gmail account.
Jason - Infinitely hackable mobile client
Datto Backupify - Protect your business with backup.
Kamon.io - Kamon makes an instrumentation library and Application Performance Monitoring tool that helps developers find and fix performance issues in microservices. Works best for Scala (Akka, Play, Lagom) and Java.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
WorkForce Software - WorkForce Software provides workforce management solutions for organizations with complex policies and compliance concerns.