Oracle
Top 50 rank: 48
The corporate software company has 370,000 customers ranging in size from tiny to giant, in more than 145 countries around the globe.
Oracle has spent more than $42 billion on acquisitions since the beginning of 2005, so it should come as no surprise that its technology can be found in nearly every industry.
After acquiring Sun Microsystems in early 2010, Oracle added enterprise servers and storage hardware sales to its already impressive portfolio.
NEXT: Microsoft
Last updated March 08 2011: 6:02 AM ET
