BELLEVUE, Wash. -- Onyx Software Corp. (Nasdaq: ONXS), a global provider of customer centric e-business solutions, today announced that Telstra Corp. Ltd., Australia's leading telecommunications provider, has launched Netrading, a hosted offering built on the Onyx e-Business Engine. Initially targeted at 49,000 existing Telstra customers and their 700,000 employees, Netrading enables a wide range of online business transactions and customer interactions.

"We are extremely pleased to announce the rollout of Onyx as the platform for Netrading's innovative new offering," said Brent Frei, Onyx Software president and CEO. "Telcos around the world are scrambling to enhance customer loyalty and improve margins by developing value-added business services for existing customers. Netrading is at the forefront of the trend and we are excited to be a key partner and the primary technology backbone in an innovative offering of such scope and scale. We've built our software with hosting in mind and Telstra is the model for the way we envision our technology being deployed - as a platform for e-business."

Netrading was designed for businesses looking to develop an e-commerce capability to support their online sales and growth, according to Lawrence Paratz, Telstra Countrywide regional managing director. "The Netrading online community offers business a gateway to the global marketplace. Netrading is an exciting e-commerce development that enables regional businesses to transact with customers and suppliers globally."

Recent tax code changes were the catalyst for all Australian businesses to consider Web-based compliance solutions. The Netrading offering combines Telstra's solution to this business need with additional e-business offerings that enable regional businesses to link with other small and medium companies. Through Netrading, they can develop online sales and marketing plans, increase buying power, trade online, conduct direct mail campaigns and capitalize on franchising opportunities. Companies will have access to Web hosting of online catalogues, Internet storefronts, online payment systems, relationship management capabilities, online customer and transaction trend reports, online trading communities and Internet access.

A revolutionary aspect of the Netrading network is the ability it provides businesses to share and pass customer data beyond their corporate walls, exponentially increasing the customer relationship value as additional businesses integrate into the network. Onyx is the underlying platform and Onyx Employee Portal is the primary merchant interface for the Netrading offering, giving users access to their e-commerce Web site, back-end systems and day-to-day customer interactions and transactions, all in one place.

"These are typically the building blocks that small to medium businesses don't even get," said Dirk van der Gaag, general manager of Telstra's e-business solutions division. "What a large enterprise has as their information technology infrastructure, we bring to the table as a fully hosted option."

The Netrading offering is built for the Web using Microsoft technology. "Customers are demanding a new generation of dynamic, collaborative e-business solutions such as the one Telstra, Onyx Software, and WebGroup have developed using Microsoft technology", said Dwight Krossa, director of ASP marketing, Microsoft Corp. "Our guiding principles have always been about empowering individuals and creating opportunities for the industry and we are pleased to see that our partners are leveraging our Windows platform to build more value for their customers'

About Onyx Software
Onyx Software Corp. (Nasdaq: ONXS) is a global supplier of enterprise-wide, customer-centric e-business applications. Onyx Software's enterprise-class software connects and powers a company's entire e-business world, including customers, partners and sales, marketing, service and call center functions, making total customer and partner information available enterprise-wide.

Onyx Software's award-winning products are known for flexibility, reliability and ease of use, resulting in high return on investment, low total cost of ownership and industry-leading customer satisfaction. Onyx operates worldwide, supporting large, medium and small companies including Agile Software, American Express, Broadwing, Commerce One, Credit Suisse, Dreyfus, FirstWorld Communications, Hummingbird, NTL Group, Portland Trail Blazers, Prudential Securities, Sierra Health Services and Singapore Cable Vision. For more information, call 888-275-6699 or email info@onyx.com. Please visit http://www.onyx.com/annualreport to download the Onyx Software 1999 annual report and 10K.

About Telstra
Telstra Corp. Ltd. is Australia's premier communications carrier and a world-class fully integrated, full-service provider across wireline, ADSL, HFC, satellite, and digital wireless networks and platforms. It is Australia's leading Internet service provider (ISP), has the most highly accessed family of internet portals and sites, and provides entertainment and multimedia content over its broadband network and through its Pay-TV joint venture.

Telstra owns and operates one of the most technologically advanced networks, offering end-to-end solutions ranging from broadband, IP, mobile and intelligent network services, to voice and data network hubs, call centers, and advanced multimedia and e-commerce applications. It has business operations in 19 countries in North America, UK/Europe and the Asia/Pacific region.

A top-tier global carrier with fiscal 1998/99 revenue of A$18.2 billion (approx. US$11.6 billion), Telstra placed 62nd in Business Week's 1999 Global 1000 ranking of the world's most valuable companies by market value. The Wall Street Journal ranked Telstra in the top 50 of the world's 100 largest public companies in 1999.

Netrading is a joint initiative of Telstra, Onyx Software and WebGroup, an Australia-based consulting firm, and provides businesses with comprehensive capabilities to conduct business online.

Editor's note: more information about Telstra Netrading can be found at www.netrading.com.au.

This press release contains forward-looking statements. Forward-looking statements are based on the opinions and estimates of management at the time the statements are made and are subject to risks and uncertainties that could cause actual results to differ materially from those anticipated in the forward-looking statements. The words "believe," "expect," "intend," "anticipate," variations of such words, and similar expressions identify forward-looking statements, but their absence does not mean that the statement is not forward-looking. These statements are not guaranties of future performance and are subject to risks, uncertainties and assumptions that are difficult to predict. Factors that could affect Onyx's actual results include, but are not limited to, the "Important Factors That May Affect Our Business, Our Results of Operations and Our Stock Price" described in our Quarterly Report on Form 10-Q for the quarter ended June 30, 2000. Readers are cautioned not to place undue reliance upon these forward-looking statements that speak only as to the date of this release. Onyx undertakes no obligation to update publicly any forward-looking statements to reflect new information, events or circumstances after the date of this release or to reflect the occurrence of unanticipated events.

Contact:

Heather Knox PR Director Onyx Software Telephone: 425.519.9225 Fax: 425.732.2414

Rosemary Moothart Investor Relations Director Onyx Software (425) 519-4068

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MEDIA CONTACTS

Americas / Corporate Headquarters Mitch Briggs Public Relations Coordinator Consona Corporation Telephone: 317.249.1620 Mobile: 317.829.4210 Europe, Middle East, Africa Richard Furby Managing Director, Onyx UK Telephone: +44 (0) 1344 322 199 Fax: +44 (0) 1344 489 035 Japan Daisuke Sawamura Director, Professional Services Telephone: +81 03 5215 7311