| 2009 Rank | Company Name | 2008 Revenue |
| 110 | Panasonic Computer Solutions Co. | $700,000,000 |
| 228 | Par Technology | $167,000,000 |
| 369 | Paradigm Solutions Corp. | $63,500,000 |
| 253 | Paragon Development Systems Inc. | $137,177,000 |
| 458 | Park Place International | $39,415,360 |
| 106 | Patni Computer Systems Ltd. | $718,900,000 |
| 70 | PC Connection Inc. | $1,753,680,000 |
| 79 | PC Mall | $1,327,974,000 |
| 333 | PCPC Direct Ltd. | $75,000,000 |
| 383 | PEAK Technologies | $57,100,000 |
| 256 | Pegasystems | $135,075,000 |
| 339 | Perceptron | $72,512,000 |
| 189 | Perficient Inc. | $237,149,000 |
| 384 | Perimeter eSecurity | $57,000,000 |
| 51 | Perot Systems | $2,779,000,000 |
| 135 | PFSweb Inc. | $451,000,000 |
| 357 | Pinnacle Data Systems | $65,813,000 |
| 479 | Portable Computer Systems Inc. | $34,000,000 |
| 365 | Pragmatics Inc. | $64,373,119 |
| 493 | Precision Computer Services | $29,628,000 |
| 91 | Presidio Networked Solutions | $947,755,000 |
| 224 | Primavera Systems | $176,000,000 |
| 402 | Prime Systems ? . | $52,000,000 |
| 385 | Programmer's Paradise | $56,892,000 |
| 474 | Project Leadership Associates Inc. | $35,911,320 |
| 132 | ProSys Information System | $469,000,000 |
| 210 | QAD Inc. | $201,256,000 |
| 67 | QinetiQ | $1,973,690,000 |
| 314 | Quest Media & Supplies Inc. | $84,000,000 |
| 479 | Quilogy | $34,000,000 |
| 124 | Rackspace | $531,900,000 |
| 246 | Radiant Systems | $145,929,000 |
| 53 | Raytheon Technical Services Company | $2,601,000,000 |
| 258 | RCG Information Technology | $131,871,100 |
| 207 | RCM Technologies Inc. | $209,300,000 |
| 491 | RDA Corporation | $30,015,000 |
| 250 | Red River Computer Co. Inc. | $141,598,000 |
| 487 | Regan Tech | $32,180,000 |
| 157 | Relational Technology Solutions | $333,000,000 |
| 194 | Retalix | $226,000,000 |
| 462 | Right! Systems Inc. | $38,503,472 |
| 481 | RightStar Inc. | $33,900,000 |
| 434 | Rolta TUSC | $43,700,000 |
| 272 | Rose International | $117,800,000 |
| 298 | RSM McGladrey Inc. | $93,100,000 |
| 217 | RWD Technologies | $189,500,000 |
| 191 | S1 | $228,435,000 |
| 60 | Safran | $2,320,000,000 |
| 14 | SAIC, Inc. | $8,935,000,000 |
| 34 | SAP AG | $4,097,950,000 |