Toronto, Canada, February 18, 2010 — Constellation Software Inc. (“Constellation”) (TSX: CSU) announced today that its wholly-owned subsidiary, Gary Jonas Computing Ltd. (“Jonas”) has completed the acquisition of Centaman Holdings Pty Ltd. (“Centaman”) of Sydney,  Australia.  The acquisition expands Jonas’ presence in the leisure market and represents its’ entry into the Attractions market.

“Centaman is a recognized leading provider of software solutions and services in their target markets within Australia, New Zealand, the United States,  as well as internationally,”  said Barry Symons, CEO of Jonas.  “We are excited to welcome the Centaman customers and employees into the Jonas family.”Centaman CEO, Mark Iles stated “The entire Centaman team is excited to be joining the Jonas family.  Teaming up with a company that understands vertical market software, with a long track record of success such as Jonas’, presents a unique opportunity for our customers,  our employees and our business partners.”

About Constellation Software

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 to address the specific needs of its customers in those industries.

About Jonas Software

Jonas Software is the leading provider of enterprise management software solutions to the Club, Foodservice, Construction, Attractions & Leisure, Fitness & Sports, Metal Service Centers, and Moving & Storage industries. Within these seven vertical markets, Jonas boasts 12 distinct brands, all of which are respected and longstanding leaders within their own domain.