Seattle is home to more than just giants like Amazon and Starbucks. There are rising software companies, health services, and media startups. The Emerald City has also become the West Coast mecca for advertising and marketing firms. Altogether, 13 Seattle-based companies made the 2018 Inc. 5000--Inc.'s annual tally of the fastest-growing private companies in the U.S. Here's a look at the top 10.

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10. Zipwhip

2018 Inc. 5000 rank No. 971 Three-year growth 509% 2017 revenue $14.9M

Zipwhip created what it calls the world's first consumer cloud-texting platform in 2007, and began providing the software to businesses in 2014. Today, the company is working on further innovating on its messaging prowess, allowing businesses across North America to apply its business-texting software to existing phone numbers, from landlines and Voice over IPs to toll-free numbers.

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9. Tango Card

2018 Inc. 5000 rank No. 912 Three-year growth 542% 2017 revenue $17M

What began as a consumer gift-card app in 2009 is now a business-focused digital rewards provider. With its catalog of digital gift cards, prepaid offerings, and nonprofit donations, companies can offer employee incentives or loyalty and influencer programs for a variety of occasions. Tango Card currently works with more than 2,000 clients worldwide.

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8. Dope Magazine

2018 Inc. 5000 rank No. 887 Three-year growth 564% 2017 revenue $4.7M 

This monthly publication and website is geared toward wellness-focused coverage that aims to normalize conversations about legal cannabis. It printed its inaugural issue in 2011, and it remains on the forefront of the cannabis movement. It currently boasts 34 employees, pulling in tens of thousands of monthly readers.

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7. Streamline Marketing

2018 Inc. 5000 rank No. 883 Three-year growth 566% 2017 revenue $2M 

An affiliate performance marketing agency established in 2014, Streamline Marketing has set itself apart by developing a proprietary analytics platform to bolster its insight capabilities. It has also invested in its own analytics tool, which is used globally by brands like Microsoft and Expedia. Other clients include T-Mobile, Levi Strauss & Co., and Amazon. 

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6. Lighter Capital

2018 Inc. 5000 rank No. 776 Three-year growth 647% 2017 revenue $11.9M

This fintech company uses a data-driven, revenue-based financing process to help startups secure growth capital without making them give up equity or board seats. Clients receive up to $500,000 in growth funding in as little as four weeks in exchange for paying based on monthly cash flow. Primarily focused on software startups, Lighter Capital has also funded consumer startups like the electric-toothbrush maker Quip. 

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5. Volt Athletics

2018 Inc. 5000 rank No. 753 Three-year growth 669% 2017 revenue $2.3M

Using performance training AI technology, Volt Athletics builds personalized programs via what it calls intelligent workout apps. The company collects and tracks athlete data, and then builds optimized, sport-specific training plans for its monthly or annual subscribers.

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4. Ro Health

2018 Inc. 5000 rank No. 701 Three-year growth 706% 2017 revenue $10.3M

Ro Health is a burgeoning medical-staffing and home-health agency. It staffs school districts and correctional facilities with health care professionals. It also assigns traveling nurses and connects home health aides to patients with chronic illnesses or disabilities. 

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3. Yapta

2018 Inc. 5000 rank No. 560 Three-year growth 901% 2017 revenue $14.6M

Looking to save money on corporate travel? Yapta sends alerts to corporate travel agents or travel managers when cheaper flights or hotel rooms become available. The company typically charges 35 percent of the amount saved.

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2. TomboyX

2018 Inc. 5000 rank No. 231 Three-year growth 2,049% 2017 revenue $5.4M

TomboyX started as a clothing line for women with a more traditionally masculine style. Yet when its married founders, Fran Dunaway and Naomi Gonzalez, started creating boxer briefs for women, sales shot up. So they quickly switched gears to focus on undergarments that take fit and quality into account for every type of body. The company's products range from $18 cotton bikini underwear to $54 for a pack of three soft sports bras. 

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2018 Inc. 5000 rank No. 206 Three-year growth 2,212% 2017 revenue $4.4M

This software company allows marketers to conduct market research online. It sells 60- and 90-minute sessions that come with transcriptions, recording, archiving, and clipping services that can be used to create and share highlight reels, among other things. Two big clients are Unilever and Mondelez; it has also done work with Logitech and Verizon.