San Jose isn't the best-known Silicon Valley haven, but it is the biggest. The Northern California city, which is nicknamed "the Capital of Silicon Valley," boasts the biggest population within the renowned tech hub and stands in tribute to the state's glittering promise. It's the home of tech heavyweights including Cisco Systems, eBay, and Adobe and also hosts 56 companies on this year's Inc. 5000.

Among those fast-growing companies--as measured by their three-year revenue growth rates between 2010 and 2013--here are the top 10:

10. Salas O'Brien Engineering 

Founded back in 1975 and incorporated in 1979, engineering firm Salas O'Brien experienced a major growth spurt during the past three years--reeling in $17 million in annual revenue in 2013. That's a 78 percent uptick from 2010. Helmed by CEO Darin Anderson, Salas O'Brien aims to take a more holistic approach to sustainable infrastructure, serving the current needs of clients and also anticipating their future needs.

9. Jade Global

Headed by CEO Karan Yaramada, Jade Global manages, hosts, and maintains IT infrastructure and software systems for companies in the tech, semiconductor, solar energy, and apparel industries. Founded back in 2003, the IT services company lands at No. 3,756 on the 2014 Inc. 5000--with sales of $15 million in 2013, up 84 percent from 2010. This year marks its fourth appearance on the Inc. 5000.

8. Bizmatics

Bizmatics is rapidly becoming a local health care giant: It nearly doubled its annual revenue between 2010 and 2013, from $3.1 to $6 million. Bizmatics provides electronic health records services as well as medical billing services. Current President and CEO Vinay Deshpande founded the company along with Rajiv Apte in 2002. Prior to Bizmatics, Deshpande co-founded SoftPlus in 1994, and Digital Tools in 1989.

7. Historical Emporium

Historical Emporium, helmed by CEO Alicia Allen, is an online retailer of reproduction Victorian, Edwardian, and Old West clothing accessories to theaters and performing arts groups, museums, and individuals. Operating with the tag line "Uncommon Products, Extraordinary Service," Historical Emporium has certainly seen extraordinary growth over the past three years: It reeled in more than $7 million in 2013, a 131 percent increase from 2010, when it earned $3.1 million in annual revenue. Overall, it ranks No. 2,822 on this year's list.

6. Clean Solar

This Bay Area residential solar installer, which operates with fewer than 50 employees, increased its annual revenue by more than 206 percent between 2013 and 2010, as sales surged to $7.5 million from $2.5 million over the period. Headed by CEO Randy Zechman, Clean Solar is making its debut appearance on the Inc. 5000, ranking No. 1,977.

5. RetailNext 

Big data technology firm RetailNext clocks in at No. 1,289 on Inc.'s fastest-growing companies list, with a tabulated revenue growth rate of 336 percent between fiscal years 2010 and 2013. Founded in 2007, the company serves retailers and manufacturers, helping them collect and analyze in-store data to better understand their customers' shopping patterns. Helmed by CEO co-founder Alexei Agratchev, RetailNext makes its debut appearance on the Inc. 5000 this year.

4. Richter10.2 Media Group

A two-time Inc. 5000 honoree, Richter10.2 hits No. 944 on this year's overall fast-growing companies list, having increased its revenue by 478 percent over the last three years. Under the leadership of CEO Robert Cornish, the company has developed a niche in strategic relations and video production. With fewer than 50 employees as of 2013, Richter10.2 reeled in $2.8 million that year. Aptly named, the company aims to shake up the reach of traditional media.

3. Early Growth Financial Services

The sole financial services company among San Jose's top 10, Early Growth has solidly earned is claim to No. 797 on the Inc. 5000: It expanded its annual revenue by more than 573 percent, earning $4.2 million in 2013 alone. Headed by CEO David Ehrenberg, Early Growth makes its debut appearance on the list this year, and is currently the third-fastest growing company in San Jose. 

2. TechShop

Well suited to its Silicon Valley location, TechShop provides equipment such as laser cutters, welding stations, and water jet cutters and offers training for fabrication and prototyping. Under the leadership of CEO Mark Hatch, the company saw revenue grow 778 percent to $10 million in 2013 from $1.1 million in 2010. Clocking in at 611 in 2014, this year marks TechShop's second time on the Inc. 5000.

1. NorCal CrossFit 

The fastest-growing private company in San Jose is NorCal CrossFit. Through its retail gym locations, corporate wellness programs, and sales of fitness gear and apparel, NorCal CrossFit earned $2.9 million in 2013. That was an 871 percent increase from 2010. With founder, CEO, coach, and "fearless leader," Jason Khalipa at the helm, the California company makes the heavy-lifting of landing at No. 551 on the Inc. 5000 look easy.