Plaxo on Monday plans to release a beta version of its new online address book service in seven languages.

Plaxo 3.0 is an ambitious revision that aims to simplify the daunting task of synchronizing multiple online address books and services from companies and organizations like AOL, Apple, Microsoft, Mozilla, Google, and Yahoo. Plaxo 3.0 also works with a variety of mobile phones.

"This product release is not just a new version of the software," said Todd Masonis, founder and VP of products. "It's really a new beginning for the company as a whole."

Founded in 2001, Plaxo has surpassed 15 million users. It has also been broadening its revenue stream beyond the two-tiered membership model (Basic, free/Premium, $50 per year). Having recently done deals with Comcast, and other Web 2.0 companies Jajah and Zingy, Plaxo is looking to provide carriers and service providers with a co-branded networked address book and other services.

In addition to broad synchronization capabilities, the new Plaxo address book features find-as-you-type searching, one-click Yahoo Maps directions, and a click-to-call function provided by Jajah. There's also a new build-in calendar, a product of Plaxo's 2006 acquisition of HipCal. Premium customers can sync their LinkedIn contacts.

Plaxo, like just about every other Web 2.0 company at the moment, is moving into social networking. Plaxo Pulse is similar to an RSS reader, except that can be used to aggregate content by individual rather than by Web site. It lets Plaxo users keep track of what their contacts are posting online, whether those posts are on Amazon, Flickr, or a blog, for example.

Plaxo 3.0 is available in English, French, German, Japanese, Portuguese, Simplified Chinese, and Spanish.