Video-calling app Tango raises $8.7M

Tango, a video-calling app for the iPhone and devices running Google’s Android mobile operating system, has raised $8.7 million of a $10 million funding round, according to a filing with the Securities and Exchange Commission.

How Zendesk's iPad app makes customer support child's play

Zendesk operates a Web-based help desk service that lets companies track customer complaints across most of the web. It’s one of a number of startups that are trying to bring the ideas behind consumer-facing technology like Twitter and Facebook to the enterprise space. And today it’s launching a mobile version of its app for the iPad.