Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
OwnTracks - Cross-platform location sharing
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
Mapple.me - Mapple.me bridges the gap between available time and availability of friends to increase social...