messenger add on

Open-source Facebook Messenger app.

Messaging app for VK.

Find duplicate photos in Aperture.

Secure instant messenger.

123 Web Messenger is a real-time instant messaging software for your own website

LAN Messenger for Small, Medium and Corporate Enterprises.

Snap Shots is now available as a browser add-on, so you can bring Snap Shots.

LAN instant messaging.

Chat with your Facebook friends on your Mac.

MSN chat client.