Top 340 SaaS Companies in Seattle, United States, September 2026

Seattle, Washington, United States

A medical staffing agency that provides traveling nurses, home health aides, school therapists, and other health workers

Seattle, Washington, United States

Flexe is actually a privately held company and is not owned by any other company. Flexe is a Seattle-based technology company that provides on-demand warehousing and fulfillment services. Their platform connects businesses in need of additional storage space with warehouse operators who have extra capacity. This allows businesses to scale their warehousing and fulfillment operations as needed without the fixed costs and long-term commitments of traditional warehousing solutions. Flexe was founded in 2013 and has since grown to become one of the largest on-demand warehousing companies in the world.

Seattle, Washington, United States

Keka Technologies Pvt. Ltd. is an HR technology company based in Hyderabad, India. Keka provides a cloud-based HR management platform that offers features such as payroll management, leave and attendance tracking, performance management, and employee self-service. Their platform is designed to help businesses of all sizes manage their HR operations more efficiently and effectively. Keka also offers a range of other HR-related services such as recruitment process outsourcing and compliance management. The company was founded in 2015 and has since grown into a leading HR technology provider in India, serving clients across various industries.

Seattle, Washington, United States

We’re on a mission to reveal cyber risk and build business resilience by exposing the threats organizations can’t see. The ExtraHop Reveal(x) network detection and response (NDR) platform uniquely delivers the visibility and decryption capabilities that organizations need to investigate smarter, stop threats faster, and keep operations running.

Seattle, WA, United States

Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always. We team with leaders who expect more. So we bring more. From strategy through delivery, our agile teams across 53 offices in 12 countries collaborate with you to bring powerful customer experiences, innovative ways of working, and new products, services, and businesses to life. Every day, we work at the forefront of industry, combining our deep roots in technology and data, to help you tackle challenges, improve operations, and drive sustainable growth. It’s why we are trusted by leaders across the majority of the Global 1000, many of the world’s most successful enterprise, mid-market, and emerging companies, and more than 500 high-impact public sector agencies, foundations, and universities. We lead with a balance of heart and practicality, curiosity and agility, local soul and global expertise. That means understanding your culture, goals, organization, and customers. That means being tireless problem solvers. And that means always standing by you as your trusted advisor, respectful challenger, and unwavering champion. Even our partnerships are built different. For more than 20 years, we've sought out and made strategic investments in the world’s emerging and leading technology platforms. Our 360-degree relationships with these innovators, built on mutual trust and respect, has cemented our position as a premier (and often first) partner of choice. We work together as one to offer tailored solutions that unlock the full potential of these technologies. At Slalom, we bring more day-one advantages, more connections and breakthroughs, more doing the right thing, more care for you and your team, and more return on your investment. So that together, we can dream bigger, move faster, and build better tomorrows for all.

Seattle, Washington, United States

AppViewX is a software company that provides a platform for the automation and orchestration of network infrastructure services. Their platform helps businesses automate the configuration and management of their network infrastructure, including devices such as load balancers, firewalls, and routers. AppViewX's platform includes features such as configuration management, certificate management, and application delivery automation, enabling businesses to streamline their network operations, reduce costs, and improve security. Their platform also provides analytics and reporting tools, allowing businesses to monitor network performance and make data-driven decisions to optimize their network infrastructure.

Seattle, Washington, United States

The company that owns Moz.com is Moz, Inc., a Seattle-based software company that provides search engine optimization (SEO) tools and resources for businesses and digital marketers. Moz offers a suite of SEO software products, including keyword research tools, site audits, rank tracking, link building, and on-page optimization tools. In addition to its software, Moz also provides educational resources and a community for SEO professionals through its blog, webinars, and conferences. The company was founded in 2004 and has since become a leading authority in the SEO industry, serving customers around the world.

Seattle, Washington, United States

Relanto is a global advisory, consulting, and technology services partner, empowering customers to accelerate innovation by harnessing the power of Data and AI, Automation, NextGen Planning, and Cloud Solutions. Fueled by innovative technology partnership eco-system and the deep expertise of our trusted team of advisors, architects and consultants, Relanto turns possibilities into reality, opening the doors to data-centric and AI-powered business evolution.

Seattle, Washington, United States

SaaS Group is a Berlin-based acquirer and operator of vertical SaaS businesses, founded in 2018 by Tim Schumacher and partners. The company buys profitable or near-profitable SaaS products generating between $1 million and $10 million in annual recurring revenue, operates them indefinitely under their original brand names, and reinvests operating cash flow into further acquisitions. Its model is explicitly modeled on Constellation Software rather than a private equity fund structure: SaaS Group holds companies permanently, never flips them, and always acquires 100 percent of the equity. As of mid-2024, SaaS Group has completed 20 acquisitions, and its portfolio companies collectively generate $60 million in combined ARR with more than 300 employees across the group. The parent company targets a 20 to 30 percent EBITDA margin across the portfolio and describes itself as profitable. In early 2024, SaaS Group closed its first-ever external equity round, raising $25 million by selling a single-digit percentage of the parent company to a group of experienced SaaS entrepreneurs. The portfolio includes brands such as Dash This, UserSnap, Scraper API, Rewardful, Prerender, Zenloop, and DeployBot, among others. Acquisition multiples typically range from 2x to 4x ARR, and deals are financed through a combination of operating cash flow, a pre-approved debt facility, and the 2024 equity raise. Two portfolio companies, Zenloop and Crostalon, were acquired out of insolvency proceedings.

Seattle, Washington, United States

Performance marketing agency helping brands find breakthroughs to unlock and accelerate growth with a data-driven, agile approach