Austin isn't the only startup ecosystem in Texas. Dallas and the neighboring Fort Worth loom large in the state, with massive companies including AT&T, ExxonMobil, and Southwest Airlines calling the area home. 

But emerging companies have found hospitable grounds there too, as this year's slate of the fastest-growing private companies in America shows. From varied industries including health care, real estate, and software, here is a closer look at the 10 fastest-growing private companies in Dallas:

7. United Real Estate Group

2021 Inc. 5000 rank No. 1055 | Three-year growth 459%

With such in-demand housing stock in the area, United Real Estate Group is almost preordained to succeed. The company's technology platform offers virtual agent and brokerage technology services, with over 1.8 million listings and 30,000 leads per year. But its scope has extended far beyond the DFW. Today, with around 167 employees, the nearly 100-year-old company supports more than 600 offices and 15,000 real estate and auction professionals across four continents. 

6. O9 Solutions 

2021 Inc. 5000 rank No. 728 | Three-year growth 674%

O9 Solutions is a cloud-based supply-chain management software maker that's attempting to tackle the ever-thorny logistical nightmare of chip shortages and general product scarcity set off by the pandemic. The company was founded in 2009 by veteran tech entrepreneur Sanjiv Sidhu, who had previously founded i2 Technologies, a supply-chain management software maker, which was acquired in 2008. With Sidhu and longtime business associate Chakri Gottemukkala at the helm, O9 works with prominent clients including Walmart, Starbucks, Estée Lauder, Nestle, Anheuser-Busch, Kraft Heinz, Samsung, Google, General Electric, and ExxonMobil. The company also got a boost last year from a $100 million minority investment from private equity firm KKR, which pushed O9's valuation to more than $1 billion.  

5. AM RE Syndicate

2021 Inc. 5000 rank No. 655 | Three-year growth 741%

AM RE Syndicate, a leading specialty program reinsurance provider, was founded in 2012 by husband and wife team Shevawn and Simon Barder. Through utilizing in-house analytics, proprietary software, and 20-plus years of experience in the industry, the company credits its most recent growth spurt to providing clients with risk-assessment opportunities during a skyrocketing housing market.

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4. Eyeful Media

2021 Inc. 5000 rank No. 542 | Three-year growth 883%

Eyeful Media is a digital strategy and marketing agency founded in 2017 out of Antonella Pisani's consulting relationship with her first client. Eyeful has more than 20 employees and serves midsize clients in industries such as luxury fashion, enterprise software, and private equity.

3. Zeal IT Consultants

2021 Inc. 5000 rank No. 483 | Three-year growth 1,003%

Zeal is a boutique software development consultancy that builds custom software for clients. The company was founded by David Thach in 2012 out of the profits he generated from several of the 7-Eleven convenience store franchises he owns in the Irving, Texas area. The company now has 27 employees.

2. Shiftsmart

2021 Inc. 5000 rank No. 280 | Three-year growth 1,649%

Shiftsmart is an online marketplace that helps companies facing increasingly complex staffing requirements. Aakash Kumar founded Shiftsmart in 2015 to execute his vision of empowering today's rapidly expanding labor force to maximize their employment opportunities. The company, which has 45 employees, focuses on offering flexibility for shift workers and gig workers.

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1. Arise Recovery Centers

2021 Inc. 5000 rank No. 264 | Three-year growth 1,759%

Founded in 2017, Arise Recovery Centers provides outpatient treatment to adults struggling with substance abuse and mental health challenges. The company has four facilities in the Dallas Fort Worth area, three facilities in Houston, and one facility on the Texas Christian University campus. Co-founder Danny Andino overcame his own addiction battle back in 2011 and later started the company with now president Lee Wolford in 2017. "We are laser-focused on outpatient care, which is lower cost and allows clients to continue their job and family life while in treatment," says Wolford, who adds that investments in new facilities, recruitment tactics, and training of clinicians have helped the company scale. 

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