IBM (NYSE:IBM) is making its first purchase of 2011. Big Blue is acquiging the real estate management software developer Tririga. Financial terms of the deal, which is expected to close in the second quarter of 2011, were not disclosed. Tririga’s software helps clients make strategic planning decisions regarding space usage, evaluates alternative real estate initiatives, generates higher returns from capital projects and assesses environmental impact investments. Tririga’s software is used by more than 200 clients, including over one-third of Fortune 100 corporations as well as seven of the 15 federal executive departments of the U.S. government The company will be integrated into IBM Tivoli Software and IBM Global Business Services. In 2010, IBM spent roughly $6 Billion to acquire 17 companies. IBM numbers are up just over a quarter or .17% to $157.95.