Darmstadt, Germany-based Software AG said the purchase will expand its customer base in North America and make it one of the largest providers of service-oriented architecture and business process management software.
Software AG sells infrastructure software to corporations, including its Adabas database and.
WebMethods, based in Fairfax, Va., has a line of server software and tools for connecting disparate data sources and applications.
Itlast year in an effort to acquire more tools for managing service-oriented architecture projects.
In a statement, Software AG said that the WebMethods acquisition will help it achieve its goal of doubling revenue to 1 billion euros ($1.3 billion).