Chat & IM

ManyCam
ManyCam(Free)
Download
Use your webcam with many applications simultaneously. Use Skype, MSN, Ustream, and many other webcam and audio applications at the same time. You can also do the same with virtual audio sound driver
Skype
Microsoft(Free)
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Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call over the internet. Users can also call landlines and mobiles at compe
Microsoft Teams
Microsoft Teams(Free)
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Free Mac online collaboration app
Facebook Desktop
Facebook(Free)
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A Quick Look at Facebook Desktop
X (Twitter)
Twitter Inc.(Free)
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Efficient Social & Communication App: X Review
Camfrog Video Chat
Camfrog(Trial version)
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Camfrog Video Chat - A Great Way to Stay Connected
Snap Camera
Snap Inc.(Free)
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Free Snapchat filters for desktop
IP Messenger
Hiroaki Kikuchi(Free)
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IP Messenger - How to Hide Your IP Address From the Internet
Signal
Open Whisper Systems(Free)
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Free, privacy-focused messenger
Feem for Mac
FeePerfect(Trial version)
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Feem for Mac: Painless local sharing