Google Duo!

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android, Windows Phone and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.

Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You can tell it about your accounts on all those services and do all your chatting within one application.

FaceTime is a video calling software feature developed by Apple for the iOS and Mac OS.

With ooVoo you can make free, high-quality video calls, voice calls, and send text messages to easily connect with your friends and family. Make clear and crisp video calls with up to 12 people at a time, on any device. Try it now!

Jump into a video chat with your friends without the need for creating accounts. Chat using just a WebRTC supported browser or phone.

Gruveo is a website for unlimited, easy and secure video, voice and screen sharing calls that start with just clicking a link. Gruveo works on all major platforms and doesn’t even require a download from your clients, enabling you to stop troubleshooting and get down to business.

Paltalk is an instant messaging service that enables users to communicate via internet chat, voice and video chat. It offers chat rooms and the ability for users to create their own public virtual chat room.