WhatsApp, the popular chat tool, uses Signal's software to encrypt its messaging.

很受欢迎的聊天工具WhatsApp使用Signal的软件为自己的通讯信息加密。

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There is no reason why the chat couldn't be used as an internal micro-blogging tool, for example.

比如，并没有什么理由说聊天不能拿来当内部的微博客工具使用。

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Hundreds of millions of Internet users must choose between China's top Internet chat programme and its best selling Internet security tool.

上亿的中国网民必须在中国互联网的最流行的聊天软件和最热卖的杀毒软件之间二选其一。

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Microsoft has announced it intends to "retire" its instant message chat tool and replace it with Skype's messaging tool.

BBC: Microsoft ditches Windows Live Messenger for Skype

One could make a case that the comment should never have been seen by the public at large anyway, as it is from an internal chat log from the Campfire collaboration tool used inside Gawker.

FORBES: Discussing Gawker's Breach With Founder Nick Denton

How often do you use Google Chat or Skype or some other video tool to catch up with loved ones?

FORBES: And We're Live: What Happens When Anyone Can Do A Live Broadcast?