Top 5 Largest Software Companies in USA

Largest software companies in USA
Rank.............Company..................Revenues
1....................Microsoft................49,453
2....................IBM........................ 22,089
3....................Oracle...................17,560
4....................HP.........................11,604
5....................Symantec...............5,692

Of course Microsft is gonna be top of the list, everywhere you turn, Microsft has there hands in things lol.

Microsoft

Microsoft, inc. is a multinational company that develops a wide range of software products. The most profitable products are the Microsoft Windows operating system and the Microsoft Office suite of productivity software. The company was founded in 1975 by Bill Gates and Paul Allen. Microsoft rose to dominate the home computer operating system market with MS-DOS in the mid-1980's, followed by the Windows line of operating systems. Windows is still the flagship product of the company, the current desktop version is Windows 7, released in 2009. The company now has three business divisions: the Microsoft Platform Products and Services Division, the Microsoft Business Division and the Microsoft Entertainment and Devices Division. Headquartered in Redmond, Washington, Microsoft has been the largest software company in the world for at least 8 years in a row.
Company information
Headquarters Redmond, Washington, United States
Primary business sectors Infrastructure Software, Office Productivity Software, Gaming Software
Secondary business sectors Databases, Operating systems, Middleware, Office software, PC Games
Type Public (NASDAQ: MSFT)
Employees 93,000
Website http://www.microsoft.com/
Wikipedia
http://en.wikipedia.org/wiki/Microsoft
Software Top 100 position (2009)
1
Previous Software Top 100 position 1
Financial information

Total revenues 2008 (mln US$) 61,900
Software revenues 2008 (mln US$) 49,453
Software revenues 2007 (mln US$) 44,728
Software revenue growth (%yoy) 10%
Percentage of total revenues 80%
Microsoft investor relations url
http://www.microsoft.com/msft/sec.mspx
Financial year end June 30th
Financial year correction 1/2 FY 2008 + Q1/Q2 FY 2009
Software revenue calculation
Client (100%), Server & Tools (80%), OSB (25%), MBD (95%), EDD (33%)
Other research remarks Adjusted software revenue calculation (2009): higher non-software components in S&T, OSB and MBD

Source: http://www.softwaretop100.org/microsoft

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Software Companies in USA