ALLAIRE AND PHONE.COM ANNOUNCE JOINT DEVELOPMENT ALLIANCE TO POWER E-BUSINESS ON THE WIRELESS WEB

Leading Internet Infrastructure Providers Team To Enable Allaire to Offer Robust, Feature Rich Wireless-Enabled E-Business Platform for Rapid Development of WAP-enabled Content

Cambridge, Mass. (December 16, 1999) - Allaire Corporation (Nasdaq: ALLR), a leading independent e-business platform vendor, and Phone.com, Inc. (Nasdaq:PHCM), a leading provider of software and services that enable the delivery of Internet-based services to mass-market wireless phones, today announced a joint development alliance that has resulted in the availability of a WAP-enabled e-business platform for the development of innovative applications for Internet-enabled mobile phones, which will be provided by Allaire. Both companies have collaborated to develop a solution that leverages the award-winning Allaire E-business platform with the leading-edge functionality of Phone.com's WAP-compatible UP.SDK 4.0.

The Allaire E-business Platform is a scaleable, open infrastructure to build and run businesses on the Web. Through this relationship with Phone.com, Allaire Platform users are now able to develop and distribute custom Wireless Application Protocol (WAP)-based applications. This functionality helps businesses built on the Allaire platform to be prepared for the growing market of Internet-enabled mobile phones.

Allaire and Phone.com have teamed up to provide rich WAP and ColdFusion support in their respective software development tools. The combination of the Allaire E-business platform and the Phone.com UP.SDK 4.0 provide the most comprehensive and powerful environment available for developing WAP applications. Allaire has incorporated Phone.com developed tools into its latest release of HomeSite and ColdFusion Studio. Phone.com UP.SDK users can receive the benefits of the reliable and proven Allaire e-business platform, as well as an easy-to-use toolkit for developing custom WAP applications. Existing Allaire customers can further extend their investment in Allaire's open platform with the addition of new Web-based applications for mobile phones.

"The e-business revolution is being driven in part by companies that can simplify and extend the integration of enabling technologies and standards, such as WAP, into the existing Internet infrastructure," said Jeremy Allaire, Chief Technology Officer of Allaire. "Allaire and Phone.com have the technology and the experience to make custom, next-generation wireless Internet services a reality for mainstream corporations."

Key customers are already implementing the wireless-enabled e-business platform from Allaire. Go2Systems, Inc. the originator of Go2, a leading global addressing and locator system designed for the Internet and portable devices, has already realized considerable productivity and business benefits from the new platform.

"We were able to convert over 300 Web sites into phone-optimized sites within four-to-five days," said Dylan Bromby, Director of Wireless Products for Go2Systems, Inc. "The rapid development cycle and unparalleled management, flexibility and scalability of the Allaire e-business platform together with the robust WAP support of the Phone.com UP.SDK was critical to our success."

"This relationship provides companies with an ideal platform for rapidly developing innovative applications for the growing number of Internet-enabled mobile phones," said Ben Linder, Vice President of Marketing for Phone.com. "Allaire is a pioneer and leader in developing solutions for successfully conducting business on the Web. Similarly, Phone.com is a pioneer and market leader in enabling the new WAP-based wireless environment. With our combined technologies and expertise, companies now have a premier solution for building a business that is better poised to succeed today and tomorrow."

The Wireless Application Protocol is an open, global specification that enables wireless devices to quickly access Web sites specifically designed for mobile phones and terminals and optimizes the information displayed on the screen of an Internet-enabled mobile phone. Through WAP, the user cannot only access typical public information such as sports, news and email, but also can get encrypted access to corporate applications delivering user-specific information over the wireless network

Both Phone.com and Allaire are members of the WAP Forum-bringing together industry leaders to develop world standards for wireless information and telephony services on digital and wireless devices.

About Phone.com

Phone.com, Inc. is a leading provider of software and services that enable the delivery of Internet-based information services to mass-market wireless telephones. Using its software, wireless subscribers have access to Internet- and corporate intranet-based services, including Email, news, stocks, weather, travel and sports. In addition, subscribers have access via their wireless telephones to network operators' intranet-based telephony services, which may include over-the-air activation, call management, billing history information, pricing plan subscription and voice message management. Phone.com is headquartered in Silicon Valley, California and has regional offices in Belfast, London and Tokyo. Visit http://www.phone.com for more information.

About Allaire

Allaire Corporation is a leading independent e-business platform vendor. The company's products, Allaire Spectra, ColdFusion, HomeSite and JRun are used by over 430,000 developers worldwide to build and deploy a broad range of interactive Web applications and public Internet sites. With a network of over 1,800 partners, including system integrators, consultants, Internet service providers, independent software vendors and complementary technology vendors, the Allaire Alliance Partner Program delivers integrated Web application development and business solutions to customers around the world. Headquartered in Cambridge, Massachusetts, Allaire Corporation also has offices in Europe and Asia Pacific and can be found on the World Wide Web at www.allaire.com.

Except for the historical information contained herein, the matters discussed in this news release are forward-looking statements involving risks and uncertainties that could cause actual results to differ materially from those in such forward-looking statements. Potential risks and uncertainties include, but are not limited to, Phone.com's limited operating history, potential fluctuations in Phone.com's operating results, uncertainties related to the Phone.com's long sales cycle and reliance on a small number of customers, Phone.com's dependence on the acceptance of its products by network operators and wireless subscribers, Phone.com's ability to adequately address the rapidly-evolving market for delivery of Internet-based services through wireless telephones, the need to achieve widespread integration of Phone.com's browser in wireless telephones, competition from companies with substantially greater financial, technical, marketing and distribution resources and the ability of Phone.com to manage a complex set of engineering, marketing and distribution relationships. Further information regarding these and other risks is included in Phone.com's Form 10-K dated September 24, 1999 and in its other filings with the Securities and Exchange Commission.

This press release contains forward-looking statements that involve a number of risks and uncertainties. Important factors that could cause actual results to differ materially from those indicated by such forward-looking statements include, but are not limited to, our limited operating history, fluctuations in our quarterly results, our ability to gain market acceptance of our products, competition, our ability to integrate any acquisitions, and other risks listed from time to time in our reports filed with the Securities and Exchange Commission, which factors are incorporated herein by reference.

ColdFusion and HomeSite are U.S. registered trademarks and Allaire, JRun and Allaire Spectra are trademarks of Allaire Corporation. Phone.com, the Phone.com name and logo, MyPhone and the family of terms carrying the "UP." prefix are trademarks of Phone.com, Inc. All Rights Reserved. All other company, brand and product names may be marks that are the sole property of their respective owners.

For further information:

Contact Phone.com Worldwide Public Relations

Allaire Corporation
Kim Walker Borst
617-761-2231
[email protected]