FOR IMMEDIATE RELEASE

Mango Announces CacheLink - The Ultimate Web Cache 'Server'

Leverage your LAN for Ultra-fast Internet Access

Westborough, MA - August 31, 1999: Mango, developers of innovative software-based servers for the business marketplace, today announced the release of their new software product, CacheLink. CacheLink is a virtual, web cache server that stores frequently viewed web pages for rapid retrieval by any system connected to the LAN. It complements the browser cache in each PC by efficiently linking them together into a single cache pool for all PCs. CacheLink retrieves frequently viewed web pages from other CacheLink users on your LAN instead of from the Internet. Performance measurements show CacheLink delivers web content, on average, 5 times faster than a T1 line and 40 times faster than a 56K shared-modem. With CacheLink, not only do you spend less time waiting for web content, you also free up your Internet bandwidth, resulting in more available capacity.

CacheLink is the most cost-effective caching solution on the market. The more systems on a LAN using CacheLink, the more effective it becomes. The product scales from as few as 2 nodes to entire LAN segments with hundreds of users. With CacheLink, the more you share, the more you save.

According to Ravi Singh, Managing Director at Punk, Ziegel & Co., an investment bank exclusively focusing on technology and health care, "Mango's CacheLink software is outstanding! From the moment we installed it in my office, I saw an obvious and significant performance boost to my web activities. Our analysts require prompt and frequent access to relevant Internet data sources. CacheLink, by virtue of its pooling capability (of all PC's connected to a LAN), has sped up web content delivery by over 30%."

CacheLink is safe, secure and dependable. CacheLink combines your browser caches securely, while maintaining your privacy and is transparent to firewalls, virus protection, and web site monitoring technology. The product includes a built-in, performance-monitoring tool that can be used to evaluate cache effectiveness in each environment.

According to Scott Davis, Mango's Vice President and Chief Technology Officer, "CacheLink is the second product in Mango's suite of innovative, software-based servers. Mango uses patented pooling technology to extract more value from networks in a simple and easy to use manner." CacheLink can be installed by anyone quickly and requires no additional hardware or software. CacheLink configures popular browsers automatically.

CacheLink is a software-only solution and is fault tolerant. Unlike other web caching solutions, the product has no single point of failure. CacheLink works with new or existing networks of Windows 95, Windows 98, and Windows NT computers.

CacheLink will be sold through the Internet Service Provider (ISP) channel, the Value Added Reseller (VAR) channel, and direct from Mango.

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.