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.

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.

Brandie is a Sweden-based crowd marketing platform that is also the world’s first social media loyalty program. We are democratising marketing through our platform by giving the benefit of the top 1% of social media users to the other 99% and promote brand loyalty. Brandie is enabling brands to create a relationship with their most loyal customers and to leverage that relationship in marketing efforts. For users this means being able to receive meaningful rewards by creating tailored content for the brands they love.

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.

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

Adelaide is working on a tough problem - measuring the quality of advertising placements - whose solution will impact the direction of the media industry and culture for decades to come. Our vision is to increase the transparency of an $800B industry and create a more fair and equitable market for consumer attention.

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.