Top Massachusetts technology companies

After a challenging 2008, tech stocks have rebounded in the first four months of 2009, with EMC Corp. gaining 20 percent by the beginning of May. Companies that rely on the defense market, such as Raytheon Co., had revenues grow in 2008, and stimulus spending may aid growth for a number of techs in 2009. Companies ranked by revenue in 2008.

Rank	Company	Revenue (millions)	Change (percent)
1	Raytheon Co.	$23,174.0	8.8
2	EMC Corp.	$14,876.2	12.4
3	Iron Mountain	$3,055.1	11.9
4	Analog Devices	$2,445.6	-0.3
5	Teradyne	$1,107.0	0.4
6	Parametric Technology Corp.	$1,069.5	11.3
7	ModusLink Global Solutions	$1,067.4	-1.8
8	Nuance Communications	$890.3	34.2
9	Avid Technology	$844.9	-9.1
10	Varian Semiconductor Equipment	$687.4	-36.5