EL SEGUNDO, CA -- (Marketwire) -- 12/21/12 -- Stamps.com® (NASDAQ: STMP), the leading provider of USPS postage online and shipping software to over 400,000 customers, today announced its inclusion in Software Magazine's ranking of the world's 500 largest software and service providers.

Stamps.com earned the recognition through its track record of robust revenue growth including total fiscal 2011 revenues of $101.6 million, an increase of 19% versus fiscal 2010. The overall growth rate for the 500 recognized businesses was up 17% from the prior year. Businesses featured in Software Magazine's ranking include IBM, Microsoft, HP, Oracle, Accenture, EMC and SAP.

"Our tremendous revenue growth is in large part due to our investments in the Stamps.com software and customer experience," said Chairman and CEO Ken McBride. "We continuously dedicate resources to research and development, and that allows us to bring powerful mailing and shipping software features to our customers."

Now in its 30th year, the 2012 Software 500 is an annual, revenue-based ranking of the world's largest software and services companies targeting medium to large enterprises, their IT professionals, software developers and business managers involved in software and services purchasing. The ranking is based on total worldwide software and services revenue for 2011. The financial information was gathered by a survey prepared by Rockport Custom Publishing, LLC. and posted at www.softwaremag.com, as well as from public documents.

About Stamps.com
Stamps.com (NASDAQ: STMP) is a leading provider of Internet-based postage services. Stamps.com's service enables small businesses, high volume shippers, enterprise shippers, and consumers to print U.S. Postal Service-approved postage with just a PC, printer and Internet connection, right from their home or office. The Company currently has PC Postage partnerships with Avery Dennison, Microsoft, HP, the U.S. Postal Service and others.

About Software Magazine and Rockport Custom Publishing
Software Magazine has been a brand name in the high-tech industry for more than 36 years. Softwaremag.com, its Web counterpart, is the online guide to enterprise software and the home of the Software 500 ranking of the world's largest software and services companies. Software Magazine and Softwaremag.com are owned and operated by Rockport Custom Publishing.

Stamps.com, the Stamps.com logo and PhotoStamps® are trademarks or registered trademarks of Stamps.com Inc. All other brands and names are property of their respective owners.