TORONTO, ONTARIO -- (Marketwire) -- 11/09/12 -- Constellation Software Inc. ("Constellation") (TSX:CSU) today announced that pursuant to the terms of the previously announced merger agreement, Constellation's subsidiary, N. Harris Computer Corporation ("Harris"), completed the acquisition of Computer Software Innovations ("CSWI") by effecting a "short-form" merger under Delaware law and CSWI became a direct, wholly-owned subsidiary of Harris. Following the merger, CSWI's stock will cease to be quoted on the OTC Bulletin Board.

About Constellation Software, Inc.

Constellation's common shares are listed on the Toronto Stock Exchange under the symbol "CSU". Constellation Software is an international provider of market leading software and services to a number of industries across both the public and private sectors. The Company acquires, manages and builds vertical market software businesses that provide mission-critical software solutions. Further information about Constellation may be obtained from its website at www.csisoftware.com.

About N. Harris Computer Corporation

Harris is a leading provider of financial management and Customer Information Systems (CIS) software solutions. Since 1976, Harris has focused on providing feature-rich and robust turnkey solutions to Public Sector, Schools, Utility, and Healthcare agencies throughout North America. Harris' focus is on creating long-term relationships with its customers and ensuring that it meets the changing needs of its customers over time. Further information about Harris may be obtained from its website at www.harriscomputer.com.

About Computer Software Innovations, Inc.

CSWI is a provider of Financial Software Solutions to the public sector market. The CSWI software solutions have established CSWI as a major software provider to school districts and local governments in the southeastern United States. CSWI offers a fully integrated suite of software products from financials and human resources to revenues and citizen services.

CSWI also provides Technology Solutions and Cloud Services, focused primarily on the public sector market, particularly K-12 education. Its Technology Solution division delivers classroom and enterprise solutions including borderless networks, datacenter and virtualization, physical security and infrastructure, video collaboration and instructional technologies while also providing Hosted Voice, Hosted Email and Identity Management solutions.

More information about CSWI is available at www.csioutfitters.com.