OpenX Technologies
OpenX Technologies, Inc. is a programmatic advertising technology company. It has raised over $75 million from Accel, Index, Samsung, Dentsu, Mangrove Capital and others.
OpenX has offices in Pasadena, New York, Tokyo, London, and Kraków.
History
In 1998, OpenX began as an open-source project providing free digital and mobile advertising technology. Their key revenue drivers during this time came from service and tech support.In 2008 the company commercialized the open-source ad server, appointing Tim Cadogan as its CEO and first U.S. employee.
In September 2017, OpenX acquired two publisher tools, Mezzobit and PubNation.
After laying off "around 100 employees" in December 2018, the following month OpenX announced plans to move all on-premises workloads fully into the Google Cloud Platform by Q2 2019.
In May 2019, OpenX launched OpenAudience, a planning and targeting tool based on LiveRamp and Tapad data.
In January 2020, OpenX announced that CEO and co-founder Tim Cadogan was leaving to become the CEO of GoFundMe and that President John Gentry would step into the CEO role. This was followed in April by another round of layoffs where 15% of the company was affected.
In December 2021, the Federal Trade Commission announced that OpenX would pay a $2 million fine "to settle allegations that the company violated federal children's privacy law." Originally, the fine was to be $7.5 million but it was reduced "due to the company's inability to pay."
In August 2025, OpenX filed a lawsuit against Google alleging that "the tech giant engaged in a range of anti-competitive behaviors" in the digital advertising market.