FOR IMMEDIATE RELEASE

Mangosoft to hold Investors Conference Call

Westborough, MA - December 11, 2000: Mangosoft Inc. (NASDAQ BB: MGOF), a developer of Business Internet software and services, announced today that management will hold a conference call on Friday, December 15, 2000 at 11:00 am EST to discuss its progress during fiscal 2000 and its goals for fiscal 2001.

To listen to the call by telephone dial 212-346-0287, and to listen to the call over the Internet, go to the Investors Relations Section of the Company's website, http://www.mangosoft.com/investors. A replay will be available for 72 hours after the call by dialing 1-800-633-8284 and entering the reservation number 17231729. A replay will also be available on the Company's website until January 15, 2001.

On the call, management will provide a thorough update of its achievements during fiscal 2000 and goals for fiscal 2001. Specific topics will include the following:

• The launches of Mangomind^SM, The Business Internet File Service^SM, and Cachelink (R) Pro, its Web caching software
• The market receptivity to these launches
• Mangosoft's strategy for marketing Mangomind and Cachelink Pro and execution of that strategy to date
• Building the management team

About Mangosoft, Inc.

Mangosoft, Inc. (OTC: BB: MGOF) creates software and services that make the Internet a better place for business. Through its Mangomind® Internet File Server for Business, Mangosoft allows its customers to connect easily and securely with remote colleagues, clients, and partners around the world, enabling them to make smarter and faster business decisions. Encryption technology is provided by RSA Security (NASDAQ: RSAS). FileTRUST^SM, acquired from FleetFinancial, provides secure, online file storage services. Mangosoft's Cachelink® Web caching software maximizes a company's existing resources, making the Internet work faster and more efficiently. Mangosoft sells its products directly to customers as well as through a network of value-added resellers and systems integrators. The Mangosoft Web site is http://www.mangosoft.com.

The matters discussed in this news release include forward-looking statements that may involve a number of risks and uncertainties. Actual results may vary significantly based on a number of factors, including, but not limited to, risks in product and technology development, market acceptance of new products, product demand, the impact of competitive products and pricing, changing economic conditions and other risk factors detailed in Mangosoft's most recent annual report and other filings with the Securities and Exchange Commission. Prices for Mangosoft products and services are subject to change - check the pricing page on Mangosoft's web site for current pricing.

fileTRUST and The Business Internet File Service are servicemarks, Mangomind and Cachelink are registered trademarks, and Mangosoft is a trademark of Mangosoft, Inc.