Companies

Industry consortium that develops and maintains the OpenRTB protocol, the standard specification for real-time bidding in programmatic advertising.

OpenSlate is a leading provider of brand safety and suitability solutions for digital advertising. The company's platform analyzes and classifies online content to help brands and agencies ensure their ads are placed in brand-safe and suitable environments.

Audience-engagement and conversation platform with an advertising business.

PubMatic's flagship Prebid-based header bidding wrapper for publishers across web, mobile, and CTV/OTT. Launched 2017.

OpenX is a global leader in digital advertising technology, helping publishers and buyers monetize their digital assets through a suite of programmatic tools and solutions.

OpenX's software suite for building advertising solutions. Launched January 6 2026.

OpenX advanced supply-side targeting and curation platform for brands and agencies. Launched July 16 2025.

Opera is a global web browser company with a significant advertising business, operating ad platforms and monetization solutions across mobile and desktop browsers.

Opera Ads is the advertising division of Opera, offering native advertising and performance marketing solutions across Opera's browser ecosystem and partner network.

OPPO Ads is the advertising platform of OPPO, one of the world's largest smartphone manufacturers, enabling brands to reach hundreds of millions of OPPO device users across its native app ecosystem.

Opt Inc. is a performance marketing and customer acquisition platform that helps brands optimize digital advertising spend across channels through data-driven automation and analytics.

Optable is a data collaboration platform providing privacy-first audience and measurement solutions for publishers and advertisers. The company offers clean room technology, identity resolution, and data activation tools designed for the cookieless advertising ecosystem.

Marketing measurement and cross-channel attribution analytics company.

Optimizely is a leading digital experience platform (DXP) offering experimentation, feature flagging, and content management tools that help businesses optimize their digital products and marketing.

OptiMonk is a conversion optimization and personalization platform that helps e-commerce businesses and websites increase sales and reduce cart abandonment through targeted popups, messages, and personalized experiences. The company provides a comprehensive suite of tools including exit-intent technology, A/B testing, and behavioral targeting to engage visitors at critical moments in their customer journey. OptiMonk serves thousands of online businesses globally, from small e-commerce stores ...

Optimove is a leading customer relationship management (CRM) platform that helps businesses drive growth through personalized, data-driven marketing campaigns.

Optmyzr is a leading provider of pay-per-click (PPC) management software solutions that serves as critical infrastructure in the digital advertising technology ecosystem. The company has developed a comprehensive suite of automation and optimization tools that enable digital marketing professionals to streamline their advertising operations across major platforms including Google Ads, Microsoft Advertising, and Amazon Ads. The platform leverages advanced algorithms and machine learning capabi...

Oracle Corporation is a multinational computer technology corporation headquartered in Austin, Texas, and is one of the world's leading enterprise software companies. The company specializes in developing and marketing database software and technology, cloud engineered systems, and enterprise software products, particularly its own brands of database management systems. Oracle has evolved from a database company to a comprehensive cloud solutions provider, offering integrated cloud applicatio...

Oracle Advertising was Oracle's adtech division offering data-driven advertising solutions, shut down by September 2024 after an 85% revenue decline driven by privacy regulation and the collapse of third-party data infrastructure.

Oracle BlueKai was a leading data management platform (DMP) that enabled marketers to collect, manage, and activate audience data for targeted advertising before being shut down by Oracle.

Oracle Commerce is an enterprise ecommerce platform that provides cloud-based solutions for B2B and B2C digital commerce experiences as part of Oracle's Customer Experience (CX) Cloud suite.

Oracle's AI-powered customer experience platform that unifies marketing, sales, and service data to deliver personalized, data-driven engagement at enterprise scale.

Oracle's enterprise customer experience platform combining marketing automation, data management, and advertising solutions for large-scale brands and agencies.