Another simple yet powerful productivity app, Skype remains the leader in video conferencing due to its reliability and versatility. It allows multiple participants in video and audio chats and allows for simultaneous video, audio, and text within the same conversation.
Even better, most functions within the app are free and work as well or better than a number of similar premium services.
For example, you can hold meetings via skype with multiple participants and the results are similar or identical to services like GoToMeeting that charge a fee for practically the same functionality at the basic service tiers. There are copycats out there that claim to be just as good or better than Skype, but when it comes to user friendliness, you will be hard pressed to find anything better.