April 4 , 2005

Open Solutions to Announce First Quarter 2005 Financial Results.

GLASTONBURY, Conn., April 4 /PRNewswire-FirstCall/ -- Open Solutions Inc. (Nasdaq: OPEN), a provider of integrated enabling technologies for community financial institutions, announced today that it will release its financial results for the first quarter ended March 31, 2005 after the close of the financial markets on Wednesday, April 27, 2005.

Shortly following the earnings announcement, Open Solutions will host an investor conference call at 5:00 p.m. Eastern Daylight Time (EDT) on Wednesday, April 27. The conference call will be webcast live, and the recorded webcast and telephone replays of the conference call will be available two hours after the conference call is complete. The webcast and telephone replays will be accessible for one week following the conference call. Instructions on how to gain access to the webcast, the live phone call and telephone replay are listed below.

Webcast and Phone Call

Open Solutions will host a live webcast of its First Quarter Investor Conference Call on Wednesday, April 27 at 5:00 p.m. EDT. To access the webcast, visit Open Solutions' web site located at http://www.opensolutions.com, enter the Investor Relations section and click on the Event Calendar link. To access the live conference call by phone, call (800) 291-5365 (or 617/614-3922 outside the United States), and enter the pass code 76009989.

Telephone Replay

A telephone replay of the call will also be available for one week after the live call by calling (888) 286-8010 (or 617/801-6888 outside the United States), and entering the pass code 11632817.

About Open Solutions
Open Solutions Inc. offers a fully featured strategic product platform that integrates core data processing applications, built on a single centralized Oracle(R) relational database, with Internet banking, cash management, CRM/business intelligence, financial accounting tools, imaging, Check 21, electronic image/item processing, interactive voice response, payment and loan origination solutions. Open Solutions' full suite of products and services allows banks, thrifts and credit unions in the United States and Canada to better compete in today's aggressive financial services marketplace, and expand and tap their trusted financial relationships, client affinity, community presence and personalized service.

For more information about Open Solutions, or its financial product line, contact Mickey Goldwasser by email at mgoldwasser@opensolutions.com, by phone at 860.652.3153 or via fax at 860.652.3156. Visit Open Solutions' Internet site at http://www.opensolutions.com.

Open Solutions Inc.(R) and The Complete Banking Solution(R) are registered trademarks of Open Solutions Inc. All other company and product names may be trademarks of their respective owners. Copyright (C) 2005 Open Solutions Inc. All rights reserved.

Safe Harbor Statement

Statements made in this press release that state Open Solutions Inc.'s or management's intentions, beliefs, expectations, or predictions for the future are forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. Readers are cautioned that these statements are only predictions and may differ materially from actual future events or results. All forward looking-statements are only as of the date of this press release and Open Solutions Inc. undertakes no obligation to update or revise them. Such forward-looking statements are subject to a number of risks, assumptions and uncertainties that could cause Open Solutions Inc.'s actual results to differ materially from those projected in such forward-looking statements. Factors which could cause our actual results to differ materially from those projected in forward-looking statements include, without limitation, economic, competitive, governmental and technological factors affecting the banking and credit union industry and/or Open Solutions Inc.'s operations, markets, products, services, prices and other factors set forth under the heading "Factors That May Affect Future Results" in Open Solutions' Annual Report on Form 10-K for the year ended December 31, 2004, as filed with the Securities and Exchange Commission on March 16, 2005.

SOURCE Open Solutions Inc.

Marvin (Mickey) Goldwasser,
mgoldwasser@opensolutions.com, or

David M. Henderson,

Contact: Marvin (Mickey) Goldwasser Open Solutions Inc. 860.652.3153