The Web giant announced Thursday the addition of 79 patents to its Open Patent Non-Assertion Pledge, which aims to foster development of open-source software by pledging not to sue any user, distributor, or developer of open-source software based on their use of the patents — unless first attacked. The new patents, which were acquired from IBM and Computer Associates in 2005, cover software used to manage data centers, including middleware, distributed storage management, distributed database management, and alarm monitoring.