Companies

Hexagon is a global leader in digital reality solutions, providing an integrated portfolio of sensor technologies, software platforms, and autonomous systems that enable organizations to capture, measure, and visualize physical assets and processes with unprecedented accuracy. The company serves diverse industries including manufacturing, infrastructure, public safety, mining, and geospatial applications, delivering solutions that bridge the physical and digital worlds through advanced measur...

Hibu is a digital marketing solutions provider focused on helping small and medium-sized businesses with online advertising, website development, and local search marketing.

Highcharts is a leading provider of JavaScript-based charting libraries that enables developers and organizations to create interactive, visually compelling data visualizations for web and mobile applications. Founded in Norway, the company has established itself as a trusted solution in the data visualization space, serving developers across industries ranging from finance and healthcare to media and e-commerce. Their flagship product offers a comprehensive suite of chart types including lin...

Highspot is a sales enablement platform that helps companies improve sales performance by empowering sales teams with the content, guidance, and training they need to engage buyers effectively. It combines content management, sales playbooks, training & coaching, and analytics into a single platform to drive consistent sales execution and achieve revenue goals.

Hightouch is a reverse ETL (extract, transform, load) platform that helps companies sync their data from their data warehouses to their marketing, sales, and customer support tools. This enables real-time data synchronization and improves operational efficiency by automating data flows.

Hill & Knowlton was a major WPP PR agency dating to 1927. Merged with BCW on July 1, 2024 to form Burson. Hill & Knowlton brand retired post-merger.

HilltopAds is a global advertising network specializing in popunder, display, and video advertising with a focus on high-traffic publishers and performance-driven campaigns.

HilltopAds is a global advertising network specializing in popunder, display, and video ads with a focus on high-traffic publishers and performance-based campaigns.

Hinge Health — recorded in ATDb as the acquirer/parent of one or more AdTech companies (s375 lineage backfill).

Hippo Video is a comprehensive video creation and marketing platform designed to help businesses leverage video content for sales, marketing, and customer support. The platform enables users to create, edit, personalize, and distribute video content at scale without requiring advanced technical skills. Founded to address the growing demand for video communication in business contexts, Hippo Video provides tools for screen recording, video editing, personalized video messaging, and video analy...

History Channel is a leading cable and satellite television network owned by A&E Networks, delivering historical, documentary, and reality programming to over 90 million U.S. households.

Hitachi Vantara — recorded in ATDb as the acquirer/parent of one or more AdTech companies (s375 lineage backfill).

Hitsteps is a real-time website analytics and live chat platform designed to help businesses understand visitor behavior and engage with customers directly. It provides detailed insights into who is on your site, what they are doing, and where they came from, enabling better conversion optimization and customer support.

Hive is a collaborative work management platform purpose-built for marketing and creative teams that require sophisticated project coordination integrated with creative-specific workflows. The platform addresses the operational complexities inherent to creative work by unifying project management, digital asset management, approval workflows, and resource planning within a single workspace. By consolidating communication channels, task tracking mechanisms, and file collaboration tools, Hive e...

Hive9 was a marketing performance management platform that helped B2B marketers plan, execute, and measure marketing investments with revenue impact visibility.

Hivestack is a leading technology company specializing in programmatic digital out-of-home (DOOH) advertising, operating as a comprehensive supply-side platform (SSP) that bridges the gap between traditional outdoor advertising and modern digital advertising ecosystems. The company has developed an integrated technology stack encompassing both supply-side and demand-side platforms, along with a specialized ad server designed exclusively for DOOH environments. This end-to-end solution enables ...

Hogarth Worldwide is WPP's content production powerhouse — 10,000+ staff. Acquired by WPP 2008. Provides scaled production + adaptation services across video, digital, print. **Note: WPP announced January 2026 that Hogarth Worldwide is being retired and folded into a new "WPP Production" unit launching February 23, 2026.**

Holoxica is a pioneering technology company specializing in advanced holographic and volumetric display systems that enable true three-dimensional visualization without requiring specialized eyewear or virtual reality headsets. The company has developed proprietary optical engineering, photonics expertise, and computational imaging algorithms to create holographic displays that preserve natural depth perception, parallax effects, and spatial relationships critical for accurate interpretation ...

Home Depot's retail media network offering advertising solutions to brands and suppliers across its digital and in-store properties.

HomeAdvisor is a digital marketplace connecting homeowners with local home service professionals, using pay-per-lead advertising to monetize contractor connections.

HookLogic was an early commerce-media platform acquired by Criteo in November 2016 for $250M. Pioneer of retail-media sponsored-product ads on retailer.com properties. Brand retired post-acquisition; tech became the foundation of what's now Criteo Retail Media Platform (RMP).

Hootsuite is a leading social media management platform that helps organizations and individuals manage their social media presence across multiple platforms, including Twitter, Facebook, LinkedIn, and Instagram.

Hopper is a travel booking app that uses AI and predictive analytics to help users find and book flights, hotels, and rental cars at optimal prices.

HOQU was a blockchain-based affiliate marketing platform that aimed to create a decentralized performance marketing ecosystem using smart contracts.