Companies
3,614 companies in the AdTech ecosystem
Havas
Advertising & Communications Holding Group
Havas is one of the world's largest global communications and advertising groups, offering integrated media, creative, and health communications services across 100+ countries.
Havas Creative
Creative Advertising & Brand Communications
Havas Creative is a global creative agency network within the Havas Group, delivering integrated brand communications, advertising campaigns, and creative strategy across all media channels.
Havas Data
Data & Analytics / Audience Intelligence
Havas Data is the data and analytics division of Havas Group, providing data-driven marketing intelligence and audience solutions to power smarter media and creative decisions.
Havas Edge
Performance Marketing / Direct Response Advertising
Direct-response and performance-marketing agency within the Havas Creative Network. Offices in Carlsbad, Boston, and Portland.
Havas Formula
Public Relations & Integrated Communications
PR agency within the Havas Creative Network. Offices in El Segundo, New York, and San Diego.
Havas Health Network
Healthcare Marketing & Pharmaceutical Advertising
Havas's health, pharma, and wellness communications sub-network. Restructured 2024-25 into three operating sub-units: Havas Life, Havas Lynx, and Jacques (named after Jacques Séguéla).
Havas Life
Healthcare Marketing & Communications
Global health communications agency within the Havas Health Network.
Havas London
Creative Agency
Distinct creative agency within Havas Creative Network; standalone brand identity (lon.havas.com).
Havas Lynx
Healthcare Marketing & Communications
Digital health brand-transformation agency within the Havas Health Network. Strengthened with new North America leadership 2025.
Havas Media
Media Agency & Advertising Services
Havas Media is the global media network of Havas Group, offering integrated media planning, buying, and data-driven advertising solutions across 140+ countries.
Havas Play
Sports & Entertainment Marketing / Sponsorship
Sports, sponsorship, gaming, and entertainment-marketing arm within Havas Media. Rebranded from 'Havas Sports & Entertainment' to 'Havas Play'.
Havas PR
Public Relations & Integrated Communications
Havas PR is a global public relations network operating under the Havas Group umbrella, delivering integrated communications, media relations, and reputation management services.
Hawk
AcquiredProgrammatic Advertising / Demand-Side Platform (DSP)
Hawk (formerly TabMo) is a French omnichannel advertising technology company and demand-side platform (DSP), headquartered in Paris. Its buying platform lets media agencies and advertisers plan, activate, and optimize campaigns across display, video, audio, digital out-of-home (DOOH), connected TV (CTV), and in-game inventory from a single interface. Hawk was acquired by Azerion in October 2023.
HBO
Premium Cable TV
Home Box Office (HBO) is the premium cable TV brand under Warner Bros. Discovery. Launched 1972. Notable shows: Game of Thrones, The Sopranos, Succession, The Last of Us. Distinct from HBO Max streaming (the streaming service brand).
HBO Max
Premium SVOD / Streaming
HBO Max is Warner Bros. Discovery's flagship premium streaming service. Complex naming history: HBO Max launched May 2020 → renamed Max May 2023 (when Discovery+ was merged in) → renamed BACK to HBO Max July 9, 2025. Major CTV ad surface (ad-supported tier launched June 2021).
Healthgrades
Healthcare Marketing Technology
Healthgrades is a leading online platform connecting patients with healthcare providers through physician ratings, reviews, and appointment scheduling.
Healthline FindCare
Healthcare Marketing & Lead Generation
Healthline FindCare is a healthcare provider directory and patient acquisition platform that connects consumers with healthcare providers through Healthline Media's health information network.
Healthline Media
Health & Wellness Publishing/Advertising
Healthline Media is a leading digital health publisher providing consumer health information and operating advertising-supported health content websites.
Heap
AcquiredProduct Analytics / Digital Experience Analytics
Heap is a digital insights platform that automatically captures every user interaction on web and mobile apps, eliminating the need for manual event tracking instrumentation.
Heap Analytics
AcquiredProduct Analytics / Digital Analytics
Heap is a digital insights platform that automatically captures user interactions on websites and mobile apps, enabling product analytics without manual event tracking.
Heap Premier
Digital Analytics & Business Intelligence
Heap Premier is the enterprise-tier offering of Heap's advanced digital analytics platform, designed specifically for large-scale organizations that require comprehensive user behavior intelligence without manual event tracking constraints. The platform's revolutionary approach centers on automatic event capture technology that retroactively collects and indexes every user interaction across digital properties, enabling analysts to query historical data for events that weren't explicitly defi...
Hearts & Science
Media Agency Network
Data-led media agency built for AT&T account 2016; specialist scale, smaller than OMD/PHD. Operates under Omnicom Media post-merger.
Heat
Creative Agency
San Francisco creative agency, founded 2004, acquired by Deloitte Digital Feb-Mar 2016 (11th Deloitte Digital acquisition). Multi-Cannes-Lions winner. Operates under Heat brand within Deloitte Digital; opened NYC office post-acquisition. Sources: PR Newswire + The Drum + AdWeek.
Hedera Hashgraph
Blockchain & Distributed Ledger Technology
Hedera Hashgraph is an enterprise-grade public distributed ledger technology platform that provides a fundamentally different approach to blockchain consensus mechanisms. Unlike traditional blockchain architectures, Hedera utilizes the patented Hashgraph consensus algorithm, which enables high-throughput transaction processing with low latency, fair transaction ordering, and enhanced security guarantees. The platform is designed to support a wide range of decentralized applications, including...