Supply Side Platform (SSP)

Adello is a mobile advertising platform leveraging AI and big data to deliver targeted, performance-driven campaigns across mobile devices.

AppNexus was a leading independent programmatic advertising technology platform that powered real-time bidding and ad exchanges before being acquired by AT&T in 2018.

Google's enterprise-grade ad serving and monetization platform, enabling publishers and broadcasters to manage, serve, and optimize digital advertising across all screens and formats.

Improve Digital was a leading European sell-side programmatic advertising platform that provided publishers with advanced ad management and monetization technology before being acquired by Azerion.

Magnite is a leading independent sell-side advertising platform that helps publishers maximize their digital advertising revenue. The company offers a comprehensive suite of tools and solutions to manage and optimize digital ad inventory across multiple channels and formats.

A contextual advertising platform specializing in search-powered ad solutions, operating as a subsidiary of a Chinese consortium since 2016.

Microsoft Monetize is a premium supply-side platform (SSP) and monetization solution for publishers, enabling them to maximize ad revenue across display, video, native, and connected TV inventory.

Open-source header bidding solution that helps publishers maximize revenue through real-time bidding

PubMatic is a sell-side platform (SSP) that provides a comprehensive digital advertising platform for publishers to maximize their ad revenue. The company enables publishers to connect and monetize their digital properties through real-time bidding and programmatic advertising.

Adform is a leading global advertising technology company that provides a full-stack, white-label solution for digital advertising. They offer a comprehensive suite of products and services for advertisers, agencies, and publishers to effectively plan, buy, and measure digital advertising campaigns.

Amazon's cloud-based header bidding and yield optimization platform that helps publishers maximize ad revenue through unified auction technology.

Disney's in-house SSP launched March 2021 (announced first Disney Tech Showcase Feb 23 2021). Hosts internal auctions across all programmatic endpoints, automating direct-sold + programmatic competition. DRAX has driven 70% increase in Disney biddable transactions, runs 8,000+ video ad campaigns. Magnite is primary sell-side partner aggregating ~30 DSPs. DRAX Direct (March 2024) provides direct-pipe integration with TTD and Google DV360 unifying Hulu+Disney+ inventory.

Equativ is a global independent advertising technology company providing omnichannel monetization solutions for publishers and advertisers through its SSP, ad server, and programmatic platforms.

Index Exchange is a global advertising technology company that enables media owners and publishers to sell their digital advertising inventory to media buyers. They provide a transparent and efficient platform for programmatic advertising.

IX's curated programmatic marketplaces product launched 2024.

JW Player is a leading video technology company that provides a comprehensive video platform for digital publishers, broadcasters, and enterprises worldwide. Founded in 2008, the company has evolved from an open-source video player into a full-stack video software solution that powers content delivery, monetization, and analytics for thousands of customers globally. The platform enables businesses to manage, distribute, and monetize video content across multiple devices and platforms while de...

LiveRail was a programmatic video advertising platform acquired by Facebook August 2014 (~$500M). At the time, the largest video SSP/exchange in the world. Facebook attempted to extend Audience Network targeting via LiveRail to off-Facebook video inventory. Shut down by Facebook end of 2017 as Facebook pivoted away from external video ad tech.

Curation layer for ad supply within Microsoft Advertising — one of the three former Xandr products (Invest/Curate/Monetize). Sister product to Microsoft Monetize SSP. Distinct from Microsoft Curate for Commerce (the retail-media product). Active and being maintained per Microsoft's July 2025 statements.

AdGear was a programmatic advertising technology platform providing ad serving, SSP, and DSP solutions, acquired by Samsung Ads in 2016.

Pioneering SSP founded 2007. Acquired by Google December 2 2011 for $400M, then shut down by Google ~2013. Featured prominently in 2024 DOJ ad-tech antitrust trial as evidence of Google's anti-competitive acquisitions.

Adtelligent is a specialized advertising technology company that operates as a comprehensive programmatic advertising solutions provider serving both publishers and advertisers in the digital advertising ecosystem. The company has built its platform on advanced header bidding technology, real-time bidding capabilities, and sophisticated programmatic advertising infrastructure designed to simplify the complexity of digital advertising while maintaining transparency and control for clients navi...

Beachfront is a connected TV and video advertising platform providing SSP, ad serving, and programmatic solutions for streaming media companies. The company enables publishers to monetize CTV and OTT inventory while offering advertisers access to premium video inventory.

Toronto-based ad-network founded 2001. Rebranded to Index Exchange January 28 2015. Andrew Casale took CEO role at the rebrand.

E-Planning is a Latin American ad tech company providing ad serving, programmatic, and yield management solutions for publishers and advertisers. The platform offers a full-stack ad tech solution including SSP, ad server, and header bidding capabilities with strong presence in LatAm markets.

EMX Digital is a supply-side platform (SSP) and header bidding technology provider that helps publishers maximize programmatic advertising revenue through advanced yield optimization.

Epldt operates as a specialized sell-side platform (SSP) within the programmatic advertising ecosystem, providing advanced technology solutions that enable publishers and media owners to maximize the value of their digital advertising inventory. The platform facilitates automated, real-time bidding processes that connect publishers with diverse demand sources including ad exchanges, demand-side platforms (DSPs), and premium ad networks. Through sophisticated algorithmic optimization and machi...

Freestar is a technology company specializing in advertising management and monetization solutions for digital publishers. The company provides a comprehensive suite of programmatic advertising tools that enable content creators, media companies, and website owners to maximize their advertising revenue through advanced header bidding solutions, yield optimization strategies, and sophisticated ad stack management. By leveraging real-time bidding capabilities and proprietary technology, Freesta...

AdPushup is a revenue optimization platform for publishers that uses machine learning to improve ad layouts, formats, and bidding strategies. The platform offers header bidding, ad layout optimization, and ad mediation to maximize publisher revenue.

Bidmatic is a header bidding and yield optimization platform for publishers that maximizes ad revenue through advanced programmatic monetization. The company provides managed header bidding solutions, ad quality controls, and revenue optimization services for digital publishers.

Colossus SSP is a supply-side platform focused on connecting diverse-owned media companies with premium programmatic demand. The platform specializes in providing monetization solutions for multicultural and minority-owned publishers, offering unique audience segments that are underrepresented in traditional programmatic ecosystems. It enables advertisers to reach diverse audiences at scale through a curated marketplace.

Cross-platform ad-buying program that unifies Hulu + Disney digital video inventory (incl. ABC, ESPN streams) into single deals; guarantees target-audience reach + completed-view billing. Launched January 2020; integrates with InnovidXP for measurement.

Monumetric is an ad management platform that helps content creators and website publishers monetize their traffic through display advertising and programmatic solutions.

Roar is a digital media and advertising technology company specializing in contextual advertising and content monetization solutions for publishers and advertisers.

Redstone is a digital advertising technology company specializing in programmatic advertising solutions and supply-side platform (SSP) technology for publishers.

Amazon's supply-side platform (SSP) enabling publishers to manage and monetize programmatic ad inventory with full transparency into auction dynamics and buyer identity.

The BBC (British Broadcasting Corporation) is the UK's public service broadcaster that operates BBC Studios and BBC Advertising, offering premium brand-safe inventory across its global digital and broadcast platforms.

Bloomberg is a global financial data and media powerhouse that operates a significant advertising business through Bloomberg Media, reaching high-net-worth professionals and decision-makers worldwide.

Outstream.video is a video advertising platform specializing in outstream video ad formats that play outside of traditional video content, enabling publishers to monetize without pre-existing video inventory.

Open-source server-side header bidding solution that enables publishers to run auctions in the cloud, reducing latency and supporting a vast ecosystem of demand partners.

Sortable is a Canadian AdTech platform that helps digital publishers maximize ad revenue through header bidding, analytics, and yield optimization tools.