Constellation Software Inc. Acquires Birdview

Toronto, Canada, May 31, 2012 – Constellation Software Inc. (TSX:CSU) today announced that its wholly-owned subsidiary Perseus Group has purchased the assets of Birdview.com, Inc.(“Birdview”) through its business unit, Constellation Web Solutions. The acquisition expands Constellation Software Inc.'s market presence in online marketing for residential real estate brokerages, offices, teams, and agents.

Headquartered in Lombard, Illinois with customers across the United States, Birdview is a leading provider of web sites, lead management, and lead generation solutions for the residential real estate industry. Its market leading solutions include OfficeSite^TM for real estate brokerages, TeamSite^TM for teams of agents and AgentSite^TM for individual agents. Features include IDX listings, lead management and e-mail marketing. Traffic Accelerator is Birdview’s second generation traffic and lead generation product.

“We continue to invest in new products and services in the residential real estate industry”, says Dexter Salna, President of Constellation Web Solutions. “Constellation continues to provide excellent support and services to help our customers successfully run their business now and in the future. We welcome the customers and employees of Birdview to the Constellation family.”

Constellation Web Solutions provides web sites, integrated voice response systems and mobile solutions to a nationwide customer base including 4 of the top 10 US Brokerages. The addition of Birdview’s products and customers will further extend Constellation Software Inc.'s reach beyond its traditional base of large enterprise customers to mid-sized brokers, offices, teams and agents.

About Constellation Web Solutions

Constellation Web Solutions, a part of Perseus Group, is a real estate marketing company that provides industry leading top real estate websites, mobile technologies, interactive voice response systems, and home builder marketing services. We work with our customers to define strategies and implement innovative ways to grow their businesses by combining strategy, technology and real estate marketing to provide the best real estate websites available. Our proven track record of award winning real estate website designs coupled with our lead generating tools provides you with a single source for real estate marketing. If your needs are for real estate website designs, interactive voice response systems, or real estate mobile marketing solutions we have you covered. We have a successful 25 year history and an impressive client list. But what sets us apart is our ability to embrace emerging trends and apply new rules of marketing in ways that meet tomorrow’s business demands. You can see it in the work we do. You can feel it in the enthusiasm our people bring to every challenge.