TokBox


 * [|TokBox]** is a web application that allows users to make multi-party video chat calls over the Internet without a download. Users can invite people to join their video chats via email, instant messaging and social media sites. They can share media and collaborate on documents together within the video chat, and send video messages by email.



Source: [|Wikipedia]

Free Easy to use, once widget it set
 * Strengths**

Requires multiple steps Some technical skills
 * Weaknesses**

[|Here is an example of how it can be used -]