A full-fledged provider of AdTech software development services, Oxagile has compiled a list of top AdTech companies NYC (New York) has to offer that are worth watching. The adtech sphere continues to grow rapidly: according to Grand View Research, the AdTech market in the United States is projected to reach a revenue of US$ 371.1 billion by 2030, with a compound annual growth rate (CAGR) of 11.9% from 2025 to 20301.
With many new AdTech companies in New York City entering the market, choosing the right partner to work with can be challenging. When compiling the list, we took into account such aspects as high-profile partnerships, innovations, revenue, funding, and recognition.
The research is underpinned by our decade-long experience in AdTech that manifests in dozens of projects around yield maximization, ad platform enhancement, ad buying and selling optimization, reputation management, and more. If you want to learn more about Oxagile and our services, you can contact us at any time.
Now, let’s delve deeper into who’s worth considering among the best AdTech companies NYC has to offer.
1. Oxagile
A regular member on the Inc. 5000 list, Oxagile is a provider of full-fledged AdTech software development services with decade-long experience under its belt. Among the company’s clients are AdTech vendors, broadcasters, and publishers. Oxagile’s core expertise includes:
- Audience and ad targeting
- Programmatic advertising
- Ad measurement
- Yield optimization
- CTV and addressable TV
- Ad fraud prevention
The firm uses cutting-edge tech and cross-domain expertise to address specific business challenges, including ad personalization, ad inventory management, and ROAS maximization.
2. GroundTruth
A leading location-based marketing and AdTech company with over $158 million in funding and recognized four years in a row as one of Ad Age’s Best Places to Work, GroundTruth offers a range of geo-contextual omnichannel products and services that help brands, agencies, small businesses, and non-profit organizations reach consumers in the right place and at the right time.
- Location audience targeting: finding potential customers based on their real-time location and location history — even within a specified timeframe and including spots like your brand office or a competitor store
- Behavioral audience targeting: building comprehensive audience profiles based on visitation behaviors, consumer lifestyle, interests, and demographic information
- Custom audience targeting: creating tailored segments based on visitat data, behavioral attributes, demographic details, purchase information, and more
3. NYIAX
With the logo “Delivering trust and transparency to the markets of tomorrow” and trusted by top-notch brands like IPG, Brave, and Nexstar Media Group, this New York-based AdTtech company brings financial exchange technology to advertising. After withdrawing its IPO in early 2025, NYIAX continues to innovate in the space with a proprietary platform that enables advertisers to trade inventory similarly to financial contracts.
Contracts negotiation, purchasing, management, reconciliation — all this is performed automatically, which reduces manual processes and discrepancies. The solution provides rock-solid security, unmatched efficiency, and transparency across all transactions — no matter the scale or complexity. Moreover, by sparing the need to look for third-party intermediaries, NYIAX allows slashing friction and fees, while boosting ROI.
4. TripleLift
With nearly 500 employees globally and now led by CEO Dave Helmreich (appointed in 2025), TripleLift continues to reinvent ad placement at the intersection of creative, media, and data. The company creates native ads that automatically match the content environment of publisher websites.
Their real-time bidding marketplace serves the world’s top publishers, streaming companies, brands, and demand-side platforms — with over 1 billion premium impressions and more than 1 trillion ad transactions monthly.
Moreover, the company leverages its in-house computer vision tool to detect elements like faces, objects, and text areas — to automatically edit the image format and adapt the ad to different devices.
5. Smartly.io
A global expert in social advertising, named a Leader in Creative Advertising Technologies in 2024 by Forrester, Smartly.io provides a platform that combines media buying, creative, and data to automate digital campaigns.
In 2025, the company hosted its flagship ADVANCE event in New York, reaffirming its commitment to innovation. With €2.5B in ad spend, Smartly.io maximizes performance and unlocks creativity for over 650 brands, including Uber, TechStyle, and eBay.
The company’s combination of media buying and creative automation spares marketers the need for manual operations, helping to focus on what matters most. Smartly.io’s proprietary tools enable advanced personalization and scalability across social channels, which drives considerable ROAS maximization.
Moreover, Smartly.io leverages predictive algorithms to automatically optimize creatives, targeting, bidding, and budgets.
6. Sonobi
One of the top ad tech companies NYC, Sonobi strives to convert traditional impression-based advertising to individual-based advertising. The company currently operates with around 50 employees across four continents, and its proprietary JetStream platform continues to unite comScore’s top 250 premium media properties with Fortune 500 advertisers.
It also provides:
- Yield optimization
- Auction environment for third-party ad networks
- Self-service platform for real-time bidding
7. The Trade Desk
With a global reputation for innovation, The Trade Desk stands out as one of the most influential AdTech companies NYC has on its arena today. Known for its high-profile partnerships with leading brands and agencies, the company operates a cutting-edge demand-side platform (DSP) that enables precise audience targeting across display, video, audio, native, and connected TV.
Driven by consistent revenue growth and a commitment to transparency, The Trade Desk has earned widespread recognition for its strategic initiatives — including Unified ID 2.0, a privacy-focused identity framework for the open internet. In 2023, it introduced Kokai, an AI-powered decisioning engine that helps advertisers optimize performance in real time.
8. Mediaocean
Mediaocean is a long-established AdTech company with a strong presence in New York and over 20 offices worldwide. It supports more than $150 billion in annual media spend, providing tools for media planning, buying, ad serving, creative personalization, and performance measurement across channels.
In 2025, Mediaocean completed the integration of Innovid and Flashtalking, consolidating its position as a full-service platform for omnichannel advertising. This move enabled deeper support for CTV, dynamic creative optimization, and cross-platform analytics — within a single ecosystem.
The company works with brands, agencies, and media owners to help simplify campaign management and improve transparency across the advertising workflow. Clients include global advertisers such as Honda, Mondelez, and Whirlpool.
9. Cadent
Following its $324 million acquisition of AdTheorent in 2024, Cadent solidified its position as a top player in convergent TV advertising. With a footprint spanning 90 million households, Cadent bridges the gap between linear and digital to help brands reach broad audiences.
Doug Rozen, former Dentsu and Horizon executive, was appointed President in 2025, further reinforcing the company’s vision for advanced analytics and addressable video at scale. Cadent’s platform now powers expanded capabilities in measuring ROAS, penetration lift, and foot traffic.
10. StackAdapt
StackAdapt is a programmatic advertising company with a growing presence in New York and offices across North America. Known for its intuitive DSP and cross-channel capabilities, it helps brands and agencies run campaigns across native, video, connected TV (CTV), audio, and digital out-of-home (DOOH).
The company’s platform focuses on privacy-friendly targeting and machine learning optimization, enabling marketers to reach relevant audiences without relying on third-party cookies. Its easy-to-use interface, transparent reporting, and strong customer support have earned it consistent recognition on platforms like G2, where it was named one of the Top 50 Software Products of 2025.
StackAdapt works with clients of all sizes, offering flexible campaign management for both performance-driven and brand awareness goals.
Conclusion
Whether you’re exploring established tools or looking to partner with one of the top players in AdTech New York, choosing the right solution depends on the complexity of your goals. While ready-made platforms can be a great fit for standard campaigns, more advanced business challenges often call for a tailored approach.
With over a decade of experience in the AdTech space, Oxagile helps companies design and build custom advertising platforms — or enhance existing ones — to better align with their strategic needs and drive measurable growth.
Sources:
1. Grand View Research — U.S. AdTech Market Outlook
