Top Washington, DC Startups (1,097)

ASI is a dual-use software company that deploys predictive AI to the world's most complex operating environments. Backed by leading investors–including Andreessen Horowitz, Renegade Partners, and Spark Capital–we actively manage over 40% of all US air traffic across both public and private sector air operations. Partnering with major airlines like United and Alaska, we optimize thousands of flights daily, delivering...

https://www.youtube.com/@northslope-technologies At Northslope, we believe that purpose-built AI products in the hands of business operators create far more value than slide decks or off-the-shelf software. That’s why we partner with ambitious organizations to transform entire industries through Palantir’s Foundry and AIP platforms—delivering powerful, measurable outcomes in weeks, not years. We operate more like a product startup than a traditional services firm. Our...

Nisos is a human risk intelligence and managed investigations company that protects organizations and their people from human-driven and digital threats by operating as an extension of their security, intelligence, and legal teams. It leverages a team of expert analysts, specialized in open-source intelligence and adversary tradecraft, to provide actionable intelligence that addresses complex risks like executive threats, insider fraud,...

MORSE is a specially selected team of scientists, engineers, and software developers who use asymmetric and unconventional approaches to deploy practical solutions that solve difficult multi-disciplinary problems faced by the US National Security Ecosystem.

Bellagent is an enterprise-level AI agent platform built to automate everyday business operations with zero-touch integrations that connect instantly to more than 1,300 applications. Launched in 2025 by Proactifi Inc., and headquartered in Chicago, the platform is built for practicality with industry-leading compliance and security standards, enabling organizations to deploy AI agents without friction from day one. Bellagent’s mission to...

Anzu Partners is a venture capital and private equity firm that invests in breakthrough industrial technologies. We team with entrepreneurs to develop and commercialize technological innovations by providing capital and deep expertise in business development, market positioning, global connectivity, and operations. Anzu Partners has offices in Washington, DC, San Diego, CA, Boston, MA, and Tampa, FL.

McChrystal Group helps you drive the results that matter by unleashing the power of your teams. That's why we’ve been helping organizations get their teams working better, smarter, and faster for over a decade. Forged in combat and proven across industries, we use our Team of Teams® framework to help you get the most out of your teams, turning them...

Team Consulting is a world-class partner in medical technology design and development. For nearly 40 years we have helped our clients create elegant, sustainable solutions to complex healthcare challenges. Our multidisciplinary team of experts bring a unique blend of human-centred design, engineering, science and regulatory expertise to your projects, working across drug delivery, MedTech, diagnostics, surgical and digital health. ?????????...

We predicted the cultural shift in work habits and designed a hospitality-driven approach to the office environment. In a crowded marketplace beautiful spaces are expected, but we know it's our concierge level services and energizing professional community that sets us apart. We appeal to the smart, independent entrepreneur that knows service has a value all of its own. Where you...

Omidyar Network is a social change venture that works to reimagine critical systems and the ideas that govern them. We focus on building more inclusive and equitable societies in which individuals have the social, economic, and democratic power to thrive.

FedTech is a venture firm that thrives at the intersection of US entrepreneurship, breakthrough technologies, and mission-driven organizations. Since 2015, we have been driving forward deep tech ventures across the DoD, NASA, DoE, universities, and federal labs. Through our startup studios, accelerators, internal innovation, and corporate venture programs, we work with individuals, companies, and government agencies to stay at the...

SpecterOps provides adversary-focused cybersecurity solutions to help organizations understand how threat actors maneuver against them, so they can successfully defend against advanced attacks. SpecterOps replicates adversary tradecraft, hardens systems against the attack cycle, and helps detect current advanced threat actor activity. Service offerings include internal program development, training courses, independent assessment options, and assessment operations support. With knowledge of the...

It starts with a goal: yours. Our diverse backgrounds and unique experiences let us view your issue from every possible angle — understanding the audience, anticipating the reaction and capturing the opportunity. The result? A fully-integrated, creative campaign strategy backed by powerful, human-centered insights. We listen. We strategize. We create. We move. We are VOX Global.

DNSFilter is redefining how organizations secure their largest threat vector: the Internet itself. DNSFilter is making the Internet safer and workplaces more productive by blocking threats at the DNS layer. DNSFilter resolves upwards of 130 billion daily queries. With 79% of attacks using Domain Name System (DNS), DNSFilter provides the world’s fastest protective DNS powered by AI, blocking threats an...

Almost 50 years ago, a handful of determined activists leased a small fishing vessel, called the Phyllis Cormack, and set sail from Vancouver for Amchitka Island in Alaska. Their mission was to protest U.S. nuclear testing off the coast of Alaska with a brave act of defiance: to place themselves in harm’s way. These daring activists sailed into history by...

DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy. Our firm is widely acknowledged as the deepest and most sophisticated political network in the public affairs industry. We craft and execute winning strategies with speed and precision at the state, national, and international levels. Founded in 1996, DCI Group...

Obviant is a software-enabled marketplace to make it easier for companies to sell to government. We're building data and AI tools to bring access and transparency to an opaque industry, with the government as the stakeholder that ultimately benefits. Selling to government has always been hard, and it’s historically stopped companies from even thinking about this market. But things are changing....

CleanChoice Energy is a clean energy supplier whose mission is to make 100% renewable energy available to everyone.

Altoida Medical Device (AMD) provides health care professionals objective measurements of cognitive performance.

540 is a technology consulting firm who helps our government and business clients innovate like start-ups. Through hard work, perseverance, and deep commitment we remove barriers to innovation which enables us to build impactful tech for the government. Contact us for: - Tech Strategy - Software Development - API Design / Dev - DevOps Email us: [email protected]