SOGo - SOGo is groupware server with a focus on scalability and open standards.
Versatrans - US State & Local Government
Baïkal - Cal and CardDAV server
INRIX - INRIX offers real-time traffic information solutions that help develop traffic data and traffic speed for freeways, highways and arterials.
Xandikos - Lightweight CalDAV/CardDAV server on top of Git.
Routefinder Pro - Solutions