Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.

JivoChat - JivoChat is a live chat that enables you to talk to visitors on your website

Zenly - Zenly is a GPS tracker to locate your friends in realtime.

tawk.to - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page

OwnTracks - Cross-platform location sharing