An on-stage interview with Evan Williams, chief executive of Twitter, failed to please users of the service.

Foursquare, the hip social network whose software is on the phones of many young urbanites, is branching out.

A variation on Yelp for taxis and a high-tech guide to subway entrances took home top honors in a city contest for apps using municipal...

A start-up called Siri says it combines "speech recognition with a brain" in its new virtual personal assistant for the iPhone.

AT&T says it is pumping an additional $2 billion into its wireless network to manage a coming wave of tablets and smartphones.

Thousands of Americans are donating money with their mobile phones to aid relief efforts in Haiti.

Google appears to be reaching out to "Blade Runner" fans with its planned smartphone, currently called Nexus One.

Philip W. Schiller, Apple's senior vice president of worldwide product marketing, has immense power over iPhone applications.

The latest annual survey of wireless phone service from Consumer Reports places AT&T dead last in customer satisfaction.

An art gallery in New York finds an unlikely benefactor: Bay Area-based venture capital firm, True Ventures.

UrbanSpoon, a restaurant recommendation app for the iPhone, now offers a feature that lets users find eateries simply by pointing the phone's camera at the...

The campaign, which allows users to vote for the ads they like and veto the ones they don't, has had some early successes.

On Tuesday, New York City is opening up more than 170 data sets to software developers to build hyper-local Web and mobile applications.

Apple has approved an application from Vonage that allows cheap phone calls over Wi-Fi and cellular voice networks.

A new online dating service called Gelato wants to match users based on their social profiles around the Web.