Companies

Growth Rock is a specialized Conversion Rate Optimization (CRO) agency operating at the strategic convergence of marketing technology, user experience design, and data science. The company serves digital-first businesses by implementing systematic, data-driven experimentation frameworks designed to accelerate growth through the optimization of digital properties. Their methodology emphasizes rapid testing velocity combined with statistical rigor, enabling clients to execute multiple experimen...

GrowthBook is an open-source platform for feature flagging and A/B testing, designed to empower engineering teams to ship features faster and make data-driven product decisions. It provides tools for managing feature rollouts, running experiments, and analyzing results directly from code.

Grubhub Ads is the advertising platform of Grubhub that enables restaurants and CPG brands to promote their offerings through sponsored placements within the Grubhub food delivery marketplace.

GSD&M is an Austin-based full-service advertising agency known for purpose-driven creative work and long-standing relationships with major national brands.

GumGum is a contextual intelligence technology company that specializes in computer vision and natural language processing to analyze and understand digital content. Founded in 2008, the company pioneered contextual advertising solutions that move beyond traditional cookie-based targeting by analyzing the actual content of web pages, images, and videos to deliver more relevant advertising experiences. GumGum's proprietary artificial intelligence technology enables brands and publishers to und...

GumGum Sports is a computer vision and AI company that measures brand exposure in sports broadcasts and live events by detecting logos, signage, and brand placements in video content. They provide sponsorship valuation and media measurement for sports marketing.

Gummicube is a leading App Store Optimization (ASO) platform and agency that helps mobile app publishers maximize organic discovery and downloads through data-driven metadata and creative optimization.

Gumroad is an online platform that empowers creators to sell digital products, subscriptions, and physical goods directly to their audience. It provides a simple storefront, payment processing, and audience management tools, enabling creators to build and monetize their independent businesses.

GWI (formerly GlobalWebIndex) is a leading audience insights company that provides data and analytics on consumer behavior, attitudes, and trends. It helps marketers, agencies, and media companies understand their target audiences to inform strategy, content creation, and media planning.

H2O.ai is an enterprise AI cloud platform company that provides open-source and commercial machine learning solutions, including automated machine learning (AutoML) capabilities.

Habu was a leading data clean room platform acquired by LiveRamp in 2024 for $200M, enabling privacy-safe data collaboration across the advertising ecosystem.

Hakuhodo is Japan's second-largest advertising agency, offering integrated marketing, media planning, and creative services with a strong Asia-Pacific presence.

Japanese advertising and marketing holding company listed on the Tokyo Stock Exchange (TSE: 2433). Formed October 1, 2003 through the integration of Hakuhodo, Daiko Advertising, and Yomiko Advertising — the first major Japanese ad-agency holdco integration, aimed at challenging Dentsu's dominance. The "DY" = Daiko + Yomiko. Japan's #2 advertising organization with FY2025 (year ended Mar 31 2025) consolidated revenue of ¥953.3 billion and 29,386 employees across 453 subsidiaries in 30+ countries. Headquartered in Akasaka, Minato, Tokyo. Sources: Wikipedia + HDYH official integrated-report PDF + Statista.

The Hakuhodo DY group's centralized media-buying, planning, and sports/events unit, formed December 1, 2003 to consolidate media-purchasing operations previously run independently by Hakuhodo, Daiko, and Yomiko. Operates Japan's #2 media-investment platform after Dentsu Media, managing TV, print, OOH, and digital inventory. Tokyo HQ, ~750 employees. Sources: Wikipedia + ZoomInfo.

Established April 1, 2024 by merging DAC (D.A.Consortium) and IREP, Hakuhodo DY ONE is the group's designated digital-marketing core under its FY2024 medium-term plan. ~3,200 staff in Tokyo deliver programmatic, performance, search, and data-driven services. Co-leads the H+ APAC network with Hakuhodo Inc. Sources: HDYH press release + Marketing-Interactive + DAC press.

HappyFox is a leading provider of customer support and help desk software solutions designed to streamline customer service operations for businesses of all sizes. Founded with a mission to simplify customer support management, the company offers a comprehensive suite of tools including advanced ticketing systems, live chat capabilities, knowledge base management, and intelligent customer service automation. These solutions enable organizations to deliver exceptional customer experiences acro...

Harmonic is a video delivery infrastructure company providing software and hardware solutions for cable operators, satellite, telco, and media companies to deliver broadcast and OTT video services.

Mobile-first market research firm. Formed 2017 when Stagwell bought Nielsen mobile-research assets.

Harte-Hanks is a global customer experience company delivering data-driven marketing services, direct mail, fulfillment, and customer care solutions to enterprise brands.

HashiCorp provides infrastructure automation software including Terraform (infrastructure-as-code), Vault (secrets management), Consul (service networking), Nomad (workload orchestration), and Boundary (secure remote access). Acquired by IBM February 27, 2025 for $6.4 billion. Folded into IBM's hybrid cloud + Red Hat ecosystem.

Hashoff was an AI-powered influencer marketing platform that connected brands with content creators across social media channels, enabling scalable influencer campaign management.

Havas is one of the world's largest global communications and advertising groups, offering integrated media, creative, and health communications services across 100+ countries.