Exhibit 99.1

      Actuate Announces More Aggressive Stock Repurchase Program

    SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--May 10,
2005--Actuate Corporation (NASDAQ:ACTU), the world leader in
Enterprise Reporting Applications, today announced that its Board of
Directors has approved an increase in the stock repurchase amount for
Actuate's second fiscal quarter and established new criteria for the
purchase amounts going forward. The Board's action modified the stock
repurchase program implemented in 2001 and allows the company to
purchase each quarter a dollar amount of stock equal to the amount of
cash generated from operations during the prior quarter, with the
exact amount to be approved in advance by the Board. During the first
quarter of 2005, Actuate is authorized to repurchase up to $2.8
million in shares, which is an increase from the previous amount of up
to $1.5 million in a quarter.
    "In our view, Actuate's stock price does not reflect the company's
long-term prospects for earnings growth and cash generation and we
look forward to this opportunity to enhance shareholder value," said
Pete Cittadini, Actuate's president and CEO.
    Under the modified stock repurchase program, which is in effect,
Actuate may repurchase its shares from time to time on the open market
or in privately negotiated transactions, subject to management's
evaluation of market conditions and other factors.

    About Actuate Corporation

    Actuate Corporation is the world leader in Enterprise Reporting
Applications that ensure 100% adoption by users. Actuate's Enterprise
Reporting Application Platform is the foundation on which Global 9000
organizations (companies with annual revenues greater than $1 billion)
and packaged application software vendors develop intuitive, Web
portal-like reporting and analytic applications that empower 100% of
users with decision-making information. These applications are
deployed inside and outside the firewall to improve corporate
performance across a range of business functions including financial
management, sales, human resource management, and customer
self-service. When tested against other business intelligence
products, Actuate's Enterprise Reporting Application Platform has been
proven to offer industry-leading scalability and the lowest Total Cost
of Ownership. Actuate has over 3,000 customers globally in a range of
industries including financial services, pharmaceuticals, insurance,
and distribution services, as well as the government sector.
    Founded in 1993, Actuate has headquarters in South San Francisco,
Calif., and has offices worldwide. Actuate is listed on the NASDAQ
exchange under the symbol ACTU. For more information on Actuate, visit
the company's Web site at www.actuate.com.

    Cautionary Note Regarding Forward-Looking Statements: The
statements contained in this release that are not purely historical
are forward looking statements within the meaning of Section 21E of
the Securities Exchange Act of 1934, including statements regarding
Actuate's expectations, beliefs, hopes, intentions or strategies
regarding the future. All forward-looking statements in this release
are based upon information available to Actuate as of the date hereof,
and Actuate disclaims any obligation to update or revise any such
forward-looking statements based on changes in expectations or the
circumstances or conditions on which such expectations may be based.
Actual results could differ materially from Actuate's current
expectations. Factors that could cause or contribute to such
differences include, but are not limited to, the general spending
environment for information technology products and services in
general and Enterprise Reporting Application software in particular,
quarterly fluctuations in our revenues and other operating results,
our ability to expand our international operations, our ability to
successfully compete against current and future competitors, the
impact of future acquisitions on the company's financial and/or
operating condition, the ability to increase revenues through our
indirect channels, general economic and geopolitical uncertainties and
other risk factors that are discussed in Actuate's Securities and
Exchange Commission filings, specifically Actuate's 2004 Annual Report
on Form 10-K filed on March 16, 2005, as amended by Form 10-K/A filed
on May 2, 2005 and Quarterly Report on Form 10-Q filed on May 10,
2005.

    Copyright(C) 2005 Actuate Corporation. All rights reserved.
Actuate and the Actuate logo are registered trademarks of Actuate
Corporation and/or its affiliates in the U.S. and certain other
countries. All other brands, names or trademarks mentioned may be
trademarks of their respective owners.

    CONTACT: Actuate Corporation
             Keren Ackerman, 650-837-4545
             kackerman@actuate.com