This program lets you make conference calls between you and several persons at the same time. It lets you share text, audio, and video messages, as well as sharing desktop applications. The best part is that the program is free to download and use. Its interface may be a little dull, but this does not affect its performance. If you do a lot of online teamwork, then you may want to give it a try... (
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The program works with the following extensions:
tt