Deltek offers software to architectural and engineering firms and government contractors. Among products sold to professional services markets is Maconomy, whose customers include multi-office accounting firms.

In a prepared statement, Deltek CEO Mike Corkery said that, "Roper's commitment to aggressively investing in our products and employees means we will continue to deliver the solutions and expertise that drives significant benefits for our customers."

Thoma Bravo acquired Deltek for $1.1 billion late in 2012. In its last publicly released numbers, Deltek reported $340.5 million in revenue for the year ended Dec. 31, 2011. Roper, based in Sarasota, Fla., reported net income of $697.1 million on revenue of $3.58 billion for the year ended Dec. 31, 2015.

Roper's companies include Aderant, which provides software to the legal market; OnCenter International, which offers software for contractors, construction and trade; and ConstructConnect, whose applications serve general contractors, subcontractors, building product manufacturers, designers, architects and project owners.