Gonna just chime in and mention Yahoo for Hadoop (yes I know Big Table was Google), and Zookeeper. Great tech started at Yahoo, but they didn’t (unlike today) make too much of a fuss/self-pat-on-the-back about it
Those projects were initiated by Yahoo, but the designs are taken directly from Google papers. Hadoop (HDFS and Map/Reduce) was based on the GFS and Map/Reduce papers. ZooKeeper was based on the Chubby paper.