The 2010 Inc. 500|5000 is ranked according to percentage revenue growth from 2006 through 2009. To qualify, companies must have been founded and generating revenue by June 30, 2006. Additionally, they had to be based in the United States, privately held, for profit, and independent—not subsidiaries or divisions of other companies—as of December 31, 2009. The minimum revenue required for 2006 is $80,000; the minimum for 2009 is $2 million.
The following 13 Language Services Providers are included in the 2010 list:
| Company Name | 2010Ranking | 3-YearGrowth | 2009Revenue |
| Sajan | 778 | 391% | $12.7 million |
| Language Services Associates | 1707 | 164% | $22 million |
| U.S. Translation | 1808 | 152% | $2.6 million |
| Welocalize | 2127 | 122% | $50.3 million |
| TransPerfect | 2492 | 96% | $221.5 million |
| CETRA Language Solutions | 2699 | 85% | $3 million |
| Certified Languages International | 2720 | 84% | $8.3 million |
| Para-Plus Translations | 2936 | 73% | $2.4 million |
| Language Line Services | 3201 | 61% | $298.9 million |
| ProTranslating | 3271 | 59% | $8.9 million |
| Dynamic Language Center | 3719 | 42% | $6.3 million |
| Fluent Language Solutions | 4799 | 9% | $5.5 million |
| Eriksen Translations | 4866 | 7% | $5.1 million |
