FOR IMMEDIATE RELEASE

Mango and Nippon Telephone & Telegraph Join Forces to Offer First Complete Internet Solution

Agreement Drives Adoption of Mangosoft's Pooling Technology Throughout Japan

Westborough, MA - March 2, 1998: Mango, developers of breakthrough networking software solutions for growing businesses, today announced a relationship with Nippon Telephone & Telegraph (NTT) that will bring the power of Mango's pooling technology to thousands of small businesses throughout Japan. Together, Mango and NTT will provide the first complete networking solution including all Internet hardware, software, and service for the Japanese small business market. NTT is the largest telecommunications company in Japan, with revenues exceeding $63 Billion.

NTT's Internet offering is the first total office solution specifically designed for the SOHO market. As part of this package, NTT will provide customers a dedicated ISDN line, an ISDN communications device, Mango's award-winning Medley software, complete installation and configuration of all systems, and ongoing Internet access.

Mango's software, called Mango98 in Japan, offers significant value to NTT's customers. Beyond offering such valuable networking enhancements as faster performance and simplified administration, Mango98 automatically installs and configures vital Internet applications such as an Internet browser, email client, news reader, and website authoring tool on each networked desktop. In addition, Mango98 provides seamless and simultaneous Internet access for all systems through a single connection. Now, NTT customers can easily and affordably experience the benefits of the Internet.

"We are thrilled that NTT selected Mango for this important initiative," said Steve Frank, founder and CEO of Mango. "For the first time, small businesses will be able to achieve a one-stop, total solution incorporating both interoffice networking and Internet access. The advanced features offered in Mango98 are an ideal fit for such a solution allowing thousands of Japanese small businesses to reap the benefits of both interoffice networking and utilization of the Internet. We look forward to future collaborations and success with NTT."

"For small businesses to fully experience the benefits of the Information Age, Internet access must be seamless and affordable," said Yasaki Saito, Senior Manager, Marketing Group, OCN Service Division, NTT. "Mango's industry-defining networking software together with NTT's telecommunications expertise are the perfect match to deliver this capability to our broad customer base."

Mango and NTT reached this agreement with the assistance of Mango's Japanese partner and distributor, SVA Japan. SVA is a leading Japanese distributor of total communications solutions, both software and hardware, and has played an integral role in Mango's success in the Japanese market.

The advanced Internet connectivity features of Mango98 were developed specifically for the NTT small business offering. Mango is committed to bringing this innovative functionality to the U.S. market and will be announcing additional product enhancements within the coming months.

Launched in 1997, Mango's Medley provides workgroups of up to 25 PCs the benefits of a client/server network in a simple, affordable solution that turns all connected systems into a single powerful force. Unlike conventional networks that merely connect PCs, Medley seamlessly "pools" the storage and memory resources of networked computers to create a shared environment. Pooling is the first technology to dynamically harness and share the resources of PCs via basic Ethernet connectivity to create a powerful, seamless and fully fault-tolerant network.

About NTT

Nippon Telegraph and Telephone Corporation (NTT) is the worlds leading telecommunications company and a pioneer in its field. NTT is the principal telecommunications company in Japan, established one hundred years ago, it has 58 million subscribers and over 500 branches throughout the country. Globally, over 3,200 multi-national companies world-wide look to NTT to provide leading-edge solutions to their telecommunications requirements.

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.