TechTarget.com
Appirio is another startup with astounding rates of growth -- in the triple digits since 2008 with no signs of slowing. It also has an impressive badge collection of more than 180 customers, including Avon Cosmetics and BMC Software. Appirio is a classic middleman, this time for cloud, that enterprises can use to stitch together on-premise and outside Software as a Service (SaaS) applications, as well as its own professional services automation (PSA) platform.