Top Tech Startups in Washington, US in 2026

Altinity is the leading service and software provider for ClickHouse - an open source SQL data warehouse offering industry-leading query speeds on petabyte-scale data. Altinity offers the highest expertise on the market to help customers deploy and run the most demanding analytic applications. We also provide innovative software to manage ClickHouse in Kubernetes, cloud, and bare metal environments.

Chowbus is a food ordering platform which curates featured dishes from selected ethnic restaurants daily and delivers them fresh and hot to your home or office affordably with the tap of your cell phone. We provide dish-centric mobile ordering experience for consumers to easily explore and order authentic ethnic food and we empower local ethnic restaurants with the technology, tools, and marketing to grow their business.

Better data leads to more performant models. Performant models lead to faster deployment. We help deliver value from AI investments faster with better data by providing an end-to-end solution to manage the entire ML lifecycle.

Outreach, the sales engagement platform, delivers performance and insights that result in higher velocity and more efficient selling. By automating and prioritizing all customer touch points throughout the sales process, Outreach triples the productivity of sales teams, and empowers them to drive more pipeline, book more meetings and exceed revenue goals. Outreach places actionable data intelligence at the fingertips of sales reps through a single, integrated view of all prospect-related information. Thousands of customers, including Cloudera, Glassdoor, Pandora, and Zillow, rely on Outreach to transform the sales process, drive collaboration between sales and marketing, and deliver higher revenue per sales rep. Outreach is a privately held company based in Seattle, Washington. To learn more, please visit outreach.io/demo.

SimilarWeb is the pioneer of digital market intelligence, and the standard for understanding the digital world. Our platform provides customers with granular insights about every website and mobile app enabling visibility into digital behavior and letting businesses see what is actually happening with their competitors, their industry and throughout the digital world. We have thousands of paying customers worldwide and millions of users using our free platform every month. Our customers are some of the largest global brands in the world and including Walmart, AirBnb, adidas, DHL and eBay. SimilarWeb raised over $112 million and has over 400 employees in 8 offices around the world in NY, SF, London, Tel Aviv, Tokyo, Kiev, Paris, San Paulo. With the insights and the data we provide businesses, agencies, marketers and analysts can benchmark performance against competitors, reveal competitors online strategy, discover new opportunities, identify emerging trends and understand consumer

Swoop is building a secure, distributed operating system, allowing our customers to securely harness their data and construct a programmable, autonomous edge. The edge is where digital rubber meets the real-world road. Where data is produced, consumed, or networked to accomplish an objective. It is covered in assets -- chips, memory, networking interfaces -- that comprise a distributed computing platform. The edge is strategically important and asset-rich. Swoop is helping unlock its potential, so that search and analysis no longer end simply with incremental insights or neatly organized search results, but with autonomous action directly at the edge. Swoop's technology has been deployed in some of the world's most sophisticated environments. Our team is purposeful in directing our technology toward solving important problems. We are building for a future where advancements in critical infrastructure, smart grids, supply chains, and manufacturing are programmed into existing systems -- rapidly, adaptive, and economically feasible.

Voicera is building the data layer for trust analytics, empowering People to score sincerity in human communication objectively at scale. Why now? Trust is the new currency. • Problem: All video meetings are recorded and processed by LLMs. How people communicate is lost in transcription, causing misinterpretation, and bad decisions. • Solution : Sincerity™ by Voicera analyzes people's behavior to assess how truthful they are from non-verbal cues with 80% accuracy. • Use Cases: Sales (customer insights, revenue forecasts), Training, HR (recruitment), Internal Fraud Investigations… • Outcomes: Voicera empowers customers to make more informed, ethical decisions in situations where trust is critical.

Trying to manually track crypto taxes gets complicated fast. TaxBit's tax engine supports transactions between any crypto or fiat currency in the world. TaxBit automatically calculates your cost basis, gains or losses, and subsequent taxes of every trade in real-time, giving you total insight into the tax impact of your trades.

Madison Reed (madison-reed.com) is an e-commerce start-up with a team of 180+ rock stars in San Francisco. We’re revolutionizing the $50B hair care market using technology (web, mobile, tablet, social) to radically innovate the user experience and business model. Madison Reed is headquartered in SF and backed by top-tier venture capital firms Norwest VP, True Ventures, Maveron and Shea Ventures.

At Possible, we believe financial health is something everyone deserves. It’s our mission to help communities break the debt cycle and unlock economic mobility for generations to come. We’re unwavering in our commitment to this mission, and love building products and services that prove changing the industry for the better is, in fact, Possible.