Top Washington, DC Startups (1,252)

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...

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,...

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...

For over 20 years, TDI’s one and only passion has been delivering cybersecurity solutions to effectively manage the business of cyber. At the global vanguard of innovation, we created Cybersecurity Performance Management (CPM) and the industry-leading CPM platform, CnSight®. Combining CnSight® with our remarkable historical experience and our exceptional capabilities of cyber operations and compliance, we offer Managed Cybersecurity Performance,...

Endgame makes it easy to observe what’s happening in your trial or free motion, prioritize sales-ready accounts and users based on behavioral signals, and act on them to drive more revenue faster. Our product works by analyzing events from a number of data sources, including product adoption, user behavior, transactional data, sales activity, and more to enable: Real-time observability. Revenue teams...

Quona Capital is a venture capital firm that invests in financial technology companies in emerging markets. The firm was formed with a simple idea - technology has the power to radically improve the quality, access and affordability of financial services for underserved consumers and businesses in Sub-Saharan Africa, Latin America and Asia. We invest in disruptive innovations to create a...

Comtech is an award winning, customer-oriented, full-service IT solutions provider serving the Civilian Federal Government, the Department of Defense and other Agencies. In the finance and medical sector, Comtech offers IT solutions to help financial and healthcare organizations comply with regulatory requirements and helps them reduce cost while increasing strategic agility.

At AccessNow our mission is to establish a go-to resource for accessibility information. We are building a connected platform to empower all people to discover a world of accessible opportunities, make better decisions and remove barriers. Leveraging our intelligent technology, we are learning how accessible the world is and mapping as many places as we possibly can. We invite you to...

Lumina is a fast-growing, first-of-its-kind job community platform for the working class. With its highly engaged community, Lumina helps tens of thousands of SMEs recruit suitable workers. Amassing hundreds of thousands of engaged job seekers, Lumina aims to revolutionize the blue and grey collar recruitment space where business owners can tap into suitable talents, fast and easy. The platform’s name...

SC&A is a small business that offers energy and environmental consulting to federal, state, and local government agencies and the private sector. Our expertise includes radiological and nuclear safety and security, climate adaptation, air quality, and emergency management and preparedness.

The International Council on Clean Transportation is an independent nonprofit organization founded to provide first-rate, unbiased research and technical and scientific analysis to environmental regulators. Our mission is to improve the environmental performance and energy efficiency of road, marine, and air transportation sectors and fuels, in order to benefit public health and mitigate climate change.

Live Action is a media and news nonprofit dedicated to ending abortion and inspiring a culture that respects all human life.

Founded as an independent life insurance brokerage firm in 1989, Winged Keel Group specializes in the structuring and administration of large block life insurance portfolios for sophisticated business owners, private investors, executives, and ultra-affluent families. Since inception, we have helped clients acquire more than $95 billion of coverage using a variety of sophisticated planning and product strategies, which help our...

G2 Ops is a preferred provider of analytical and innovative solutions in the following areas: - Model-Based Systems Engineering - Cybersecurity Requirements, Analysis, and Threat Assessment - Cybersecurity Consulting Strategic vision: G2 Ops helps companies stay ahead of cyber crime and IT threats by identifying and measuring weaknesses before incidents occur, then providing remediation priorities based on individual business and financial risk thresholds.

Optimity Advisors supports healthcare payers, providers and pharmacies to navigate industry changes, deliver high-quality care, maximize value and contain costs. Our systematic, collaborative approach and deep healthcare operations experience mean we’ve not only been there and done that, but we’re helping our clients redefine where they’re headed in a continually changing landscape.

Today’s defense data challenges call for heroic solutions. We are a proven Intelligence Community (IC) team focused on changing the way government makes sense of complex data. Our teams use a proven “desk-side” approach, working directly with analysts, operators, and warfighters to automate workflows and derive data driven insight.

Civis Analytics helps leading businesses, nonprofits, and government agencies use data to identify, attract, and engage customers, constituents, and citizens. We use proprietary data, technology and advisory services, and an interdisciplinary team of data scientists, developers, and survey science experts, Civis helps organizations stop guessing.

Running an organization and executing plans is hard work. Our proven approach to operational excellence and delivering results combines a focus on outcomes, data-driven insights, and ongoing collaboration. Censeo is recognized for its focus on its people and unique business model by the world’s leading business newspapers and the most respected industry magazines: • 2020 Fortune America's Best Consulting Firms • 2019...

Miriam's Kitchen is a nonprofit organization dedicated to ending homelessness in Washington, D.C. by providing meals, case management, and advocacy.

DMC is an established project-based engineering and software development firm founded in 1996 and based in Chicago, Illinois. We develop and implement solutions for a wide range of industries using a variety of technologies. Every solution we develop is based upon a solid understanding of software and system integration principles. DMC maintains premier technology partnerships with Microsoft, Siemens, and National...