AppNexus brings industry-leading ad technology platform to mobile. Team that unlocked wave of innovation and spend in display takes on mobile.
AppNexus Named OnMedia 100 Company of the Year
AppNexus is Made in New York
Digital Advertising's Most Innovative Companies Build Their Businesses On AppNexus
Transforming Advertising Into A Force for Good
AppNexians: Solving Advertising's Biggest Challenges
Innovation at AppNexus: More Than Just A Catchphrase
The Industry's Only Open and Customizable Ad Tech Platform

APPNEXUS IS TODAY'S MOST POWERFUL, OPEN AND CUSTOMIZABLE ADVERTISING TECHNOLOGY PLATFORM. ADVERTISING'S LARGEST AND MOST INNOVATIVE COMPANIES BUILD THEIR BUSINESSES ON APPNEXUS.

Build A
Differentiated
Ad Network
Improve performance and scale your business with the industry's most customizable technology stack.
Build A
Trading
Desk
Focus on developing and showcasing your unique expertise, not on building infrastructure.
Build An
AppNexus
App
Bring your vision to life on a platform connected to more of the industry's buyers and sellers.
Build A
Custom
Exchange
Monetize your inventory and drive higher yield with access to more sources of demand and best-in-class tools.

View A Few Of Our Case Studies:

AppNexus News

Could AppNexus's digital ads be the unlikely saviour of our newspapers?
June 16, 2013

The Guardian - "Brian O'Kelley is an unlikely saviour of newspapers. For one thing, the 35-year-old chief executive of advertising technology company AppNexus – which has morphed from startup to $1bn behemoth with 500 employees in just five years – concedes he knows very little about print. Digital, however, is his currency and though he will doubtless be accused by some of hyping his company, O'Kelley describes saving newspapers as his company's "higher purpose"."

New King Of Ad Tech: How AppNexus CEO Brian O'Kelley Went From Fired To First
June 26, 2013

Forbes - Forbes writes an in-depth piece on AppNexus and its CEO and co-founder Brian O'Kelley, who is "arguably the most brilliant software engineer in New York’s brimming ad-tech community." 

AppNexus Events

Jul
17
Out in Tech
New York, NY

Out in Tech is a quarterly social aimed at cultivating New York’s LGBT tech sector community. The event will feature LGBT leaders from across the industry who will reflect on experiences at various life stages both in and outside of the office. A cocktail reception will follow. Speakers include: Richard Socarides, Writer, Political Strategist, Attorney; Charles Myers, Senior Managing Director, Evercore Partners; Joel Spolsky, Co-Founder, StackExchange and Fog Creek Software.

Jul
22
O'Reilly OSCON
Portland, OR

AppNexus is a sponsor of O'Reilly OSCON (Open Source Convention), a five-day gathering of thousands of the best and brightest minds in technology exploring all things open source. Director of Optimization Dave Himrod, Engineering Manager Steve Kannan, and Software Engineer Angelica Pando will be presenting "Python in an Evolving Enterprise Ecosystem," an evaluation of various Python-Hadoop integration solutions.