Top Adtech Startups in 2026

Moloco was founded in 2013 by a team of machine learning and software engineers with expertise from Google, Oracle, Twitter, and Facebook. With its headquarters in Redwood City, California, Moloco has 15 offices across the US, UK, Korea, China, Japan, India, Europe, and Singapore.

Enigma builds world-class data infrastructure, developer-friendly APIs, and intelligent tools that radically transform how businesses interact with each other. By engineering better attributes from the ground up and telling a more complete story, we empower our customers with the confidence they need to automate key business decisions. We’re a team of curious, driven individuals with diverse backgrounds and skills, but we’re all passionate about engineering deeper understanding through data—together.

Yieldmo is one of the world’s fastest-growing digital advertising and attention analytics companies. Agencies and brands use its premium marketplace to create, measure, model, and optimize their campaigns for unmatched scale and performance. Underpinned by AEROS Attention Analytics, advertisers can now truly understand how consumers are interacting with ads before the click, and after the initial view. Yieldmo ultimately delivers better results by harnessing the power of attention data to drive superior audience engagement and targeting.

Nextdoor is the world's largest social network for the neighborhood, enabling truly local conversations that empower neighbors to build stronger and safer communities. Building connections in the real world is a universal human need. That truth, and the reality that neighborhoods are one of the most important and useful communities in our lives have been guiding principles for Nextdoor. Today, neighbors rely on Nextdoor in more than 242,000 neighborhoods around the world in the United States, the United Kingdom, Germany, France, the Netherlands, Italy, Spain, Sweden, Denmark and Australia, with many more to come.

FiscalNote is a technology-powered global software data and media company that uses powerful machine learning to provide clients with the right policy information and insights, and at the right time so that they can better navigate market risk and uncertainty and maximize new opportunities. As the premier hub of domestic and global information for more than 5,000 clients worldwide, FiscalNote’s tools, analysis, news, and award-winning journalism delivers context, clarity, and a competitive edge in a rapidly changing world. To learn more about FiscalNote and its family of brands visit fiscalnote.com. FiscalNote has raised more than $230 million from prominent investors such as S&P Global, The Economist Group, NEA, Mark Cuban, Jerry Yang, Steve Case, etc.

We are improving the TV viewing experience, enabling content discovery, and addressing audience fragmentation across screens to strengthen television’s business model and relevance to consumers. Our data and measurement products are transforming the way today’s largest brands across the media landscape are thinking about their business. Given the dramatic growth in streaming services, connected devices, time-shifting, and multi-screen viewership, our data solves real problems and creates meaningful competitive advantage for our clients.

A platform that automates the collection, assignment and execution against that physical world data that transforms businesses

System1 is the world's largest independent marketplace for keyword pay-per-click advertising. Our platform analyzes billions of consumer attributes and uses “pre-targeting” algorithms to unlock and fulfill consumer intent across channels including social, native, email, search, market research, and lead generation. The technology we developed anchors on six major optimization systems, using statistical and machine-learning models to identify how consumers will respond to a variety of inputs, digitally echoing how people naturally behave. This allows us to tap into and serve consumer intent on a massive scale.

matchinguu is a mobile ad-tech company. Our goal is to change the way app publishers and advertisers interact with audiences. Through our realtime push- and proximity-marketing platform we empower engagement that is more targeted and highly relevant. We believe that optimizing audience sizes for relevance will always lead to the highest customer satisfaction and conversion. A seamless flow between the physical reality and the digital world is optimizing ROI for our app publishers. By connecting apps in our network, we provide new options to grow traffic and deliver innovative monetization opportunities without being intrusive to their users.

Applecart is a high growth marketing technology company based in New York City, founded in 2013. Applecart has developed a proprietary social graph platform that uses publicly available data to map over 25 billion social relationships between more than 250 million adult Americans. Applecart’s platform helps major corporations, national nonprofit organizations, and high-profile political campaigns with their highest stakes marketing challenge: reaching hard-to-reach audiences of decision makers, spanning corporate executives, legislators, regulators, investors, members of the media, and more. For years, marketing technology businesses have focused on solving b2c (consumer) marketing challenges (e.g. look-a-like modeling to find new customers), but the traditional pay-per-impression advertising model has left a massive opportunity unsolved for: how to market when a company’s target isn’t the average consumer, but is instead a single, senior decision maker. Applecart is the solution to this problem for some of the world’s most prominent organizations. Quick facts about us: Applecart has generated over $30M in revenue, with annual revenues in excess of $10M. Our senior leadership team includes two members of the 2021 Forbes 30 under 30 list for Marketing and Advertising, a former senior White House advisor, one of the earliest sales leaders at Google and Twitter, and two of the Democratic Party’s most successful pollsters and strategists Our investors include global sports, entertainment and marketing giant Endeavor, KKR Co-Chairman and Co-CEO Henry Kravis, entrepreneur Chris Burch, a founder of Palantir, senior engineering leaders at Twitter and Yelp, past CEOs of Fortune 50 companies and a number of well-known venture capitalists. Endeavor CEO Ari Emanuel is a board member of the company. Current and past clients include Blackstone, Boeing, KKR, the Environmental Defense Fund, the Business Roundtable, Governor John Kasich, Congressman Conor Lamb and Republican Vote