Onyx Software Selected by Mellon's Private Wealth Management Group for Customer Relationship Management
Mellon Group Chooses Onyx Based on Past Success, Deep Financial Services Expertise

BELLEVUE, Wash. - Onyx® Software Corp. (NASDAQ: ONXS), worldwide leader in successful CRM, today announced that Mellon Financial Corporation's Private Wealth Management group has selected Onyx as its customer relationship management (CRM) solution. Mellon plans to deploy the Onyx Enterprise application to users at 60 of its private wealth offices nationwide.

Mellon is among the nation's leading private wealth managers, with more than 130 years of experience providing investment management, wealth management and banking services for financially successful individuals, families, family offices, charitable gift programs, endowments and foundations.

"Mellon prides itself on exceeding client expectations, which we can achieve through detailed customer knowledge and focus," said Timothy Tully Jr., chief information officer of Mellon's Private Wealth Management group. "We selected Onyx to help us continue to meet our client relationship management goals. Based on Onyx's past work for other Mellon business units, its deep financial services expertise and Web-based solutions, Onyx is the right choice for us."

Cross-Divisional Deployment to Drive Improved Business Results
One of the key goals in Mellon's Private Wealth Management group is to expand business opportunities with both new and existing clients. Employees across the group's sales, marketing and portfolio management departments will use Onyx to better capture and integrate client and prospective client information, which will enhance efficiency in communicating with and servicing external contacts.

The cross-departmental approach chosen by the Mellon group mirrors that of many Onyx customers. More than 85 percent of Onyx customers use the product across three or more departments, with more than 60 percent using Onyx across five or more.

"Within the financial services industry, client relationships have become exceedingly complex, which means it's more critical than ever to manage customer data and have up-to-date information at every customer-facing employee's fingertips," said Brent Frei, president, CEO and co-founder of Onyx Software. "We're very pleased that a respected institution such as Mellon's Private Wealth Management group has chosen to go with Onyx Enterprise CRM. We believe its decision validates our core values of ensuring customer success and doing business with integrity."

Onyx is a leading full-suite CRM vendor in the financial services market, counting among its customers four of the top six asset management firms in the world. Onyx clients also include more than thirty percent of the world's 50 largest asset management firms as ranked by Pensions & Investments Magazine. The addition of Mellon's Private Wealth Management group to the Onyx customer base further extends Onyx's growing presence in the business-to-consumer financial services segment.

Onyx Enterprise CRM integrates sales, marketing, and service operations throughout an enterprise to manage the multiple dimensions of client and partner relationships. Onyx CRM helps companies build more productive, profitable businesses by powering their ability to deliver an extraordinary customer experience. Onyx CRM is a single, unified application comprised of portals for tailoring functionality to different user communities, intuitive web interfaces for ease of navigation and a Web-services platform built on XML for interoperability with other business systems. Companies large and small have successfully deployed Onyx Enterprise CRM, efficiently scaling from 50 to more than 5,000 users in a live production environment.

About Mellon Financial Corporation
Mellon Financial Corporation is a global financial services company. Headquartered in Pittsburgh, Mellon is one of the world's leading providers of financial services for institutions, corporations and affluent individuals, providing institutional asset management, mutual funds, private wealth management, asset servicing, human resources services and treasury services. Mellon has approximately $2.9 trillion in assets under management, administration or custody, including $581 billion under management. Its asset management companies include The Dreyfus Corporation and U.K.-based Newton Investment Management Limited. More about Mellon is available at www.mellon.com.

About Onyx Software
Onyx Software Corp. (Nasdaq: ONXS), worldwide leader in delivering successful CRM, offers a fast, cost-effective, usable solution that shares critical information among employees, customers and partners through three role-specific, Web services-based portals. The Onyx approach delivers real-world success by aligning CRM technology with business objectives, strategies and processes. Companies rely on Onyx across multiple departments to create a superior customer experience and a profitable bottom line. Onyx serves customers worldwide in a variety of industries, including financial services, healthcare, high technology and the public sector. Customers include Amway, United Kingdom lottery operator Camelot, Delta Dental Plans of California, Microsoft Corporation, Mellon Financial Corporation, The Regence Group, State Street Corporation and Suncorp. . More information can be found at (888) ASK-ONYX, or info@onyx.com.

Forward-Looking Statement
This press release contains forward-looking statements, including the anticipated rollout of the Onyx application by Mellon Financial Corporation. 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 guarantees 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 annual report on form 10-K for the period ended December 31, 2002. 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.

Onyx is a registered trademark of Onyx Software Corp. in the United States and other countries. Other product or service names mentioned herein are the trademarks of their respective owners.

Contact:

Bob Craig Onyx Software 617-314-6846

2006 Press Archive

2005 Press Archive

2004 Press Archive

2003 Press Archive

2002 Press Archive

2001 Press Archive

2000 Press Archive

1999 Press Archive

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