App Logo
DEEN
Start for free
ONOP

AdTech Vendor · Data Provider / Broker

Onetag vs OpenX

Structured technology and market comparison · 2026

Direct Feature Comparison

Onetag · vs · OpenX
Market Cluster / Sector
OnetagAdTech Vendor · Data Provider / Broker
OpenXAdTech Vendor · Data Provider / Broker
Platform Focus
Onetag

Cookieless programmatic curation and exchange platform for buyers and publishers.

OpenX

Independent SSP and ad exchange for premium programmatic inventory.

Company Size
Onetag50–200 employees
OpenX201–500 employees
Headquarters
OnetagUnknown
OpenXUS
Year Founded
Onetag2015
OpenX2007
Dossier & Alternatives

Analyze all overlapping signals and tech stacks for Onetag and OpenX

Compare mutual enterprise clients, monetization models, live market signals, and partner networks directly in the interactive Knowledge Graph.

Compare free in ExplorerFree · No credit card · 1-click via Google/LinkedIn

Comparison Analysis

What is the main difference between Onetag and OpenX?

When comparing Onetag and OpenX, both platforms operate within the Supply-Side Platform (SSP), Display, Web & Mobile, and Native & Contextual Ads ecosystem. Onetag is positioned as Cookieless programmatic curation and exchange platform for buyers and publishers, whereas OpenX focuses on Independent SSP and ad exchange for premium programmatic inventory. Decision-makers evaluate both solutions when orchestrating their commercial monetization and technology stack.

What are the top alternatives to Onetag and OpenX?

When evaluating Onetag and OpenX, enterprise buyers also consider other platforms in Supply-Side Platform (SSP), Display, Web & Mobile, and Native & Contextual Ads. You can discover the full competitive landscape and evaluate other alternatives by viewing their respective footprint profiles on Polaris7.

How do the corporate scale, structure, and headquarters of Onetag and OpenX compare?

Onetag is headquartered in Unknown (founded in 2015) with 50–200 employees. OpenX is based in US (founded in 2007) with 201–500 employees. Complete ownership, subsidiary trees, and corporate affiliations are documented across Polaris7.

Market Signals

Recent Market Signals & Activity: Onetag vs OpenX

Documented market movements, strategic partnerships, product releases, and regulatory developments mapped across Polaris7.

ON

Onetag

Recent Signals

  • ·Onetag

    One connector for all Onetag: how we brought the platform inside AI agents

    New article published on 08/10/2026 about integrating Onetag's platform with AI agents.

  • ·ExchangeWireHiring

    Onetag Hires Peter Wallace as Chief Revenue Officer

    Onetag, an independent advertising technology company, has appointed Peter Wallace as its new Chief Revenue Officer (CRO). The appointment is aimed at accelerating the company's global growth. Peter Wallace brings extensive experience in the ad tech industry, having previously held senior roles at major companies. This strategic hire reflects Onetag's commitment to strengthening its leadership team and expanding its global footprint.

    • Onetag appointed Peter Wallace as Chief Revenue Officer.
    • The appointment is intended to accelerate global growth.
    • Peter Wallace has previous experience in the ad tech industry.
View all signals for Onetag →
OP

OpenX

Recent Signals

  • ·OpenX

    Supply-Side Targeting Spend Doubles as Buyers Move Beyond Inventory Curation

    OpenX announces that supply-side targeting spend has doubled as buyers move beyond inventory curation.

  • ·OpenX

    OpenX Appoints John Rogers as SVP of Global Publisher Development

    OpenX announced the appointment of John Rogers as SVP of Global Publisher Development, a key leadership hire to drive publisher growth.

  • ·ExchangeWireHiring

    OpenX Names John Rogers SVP of Global Publisher Development

    OpenX, the advertising technology company, has appointed John Rogers as Senior Vice President of Global Publisher Development. Rogers will lead the company's global publisher development strategy, focusing on strengthening relationships with publishers and driving growth. He brings extensive experience in the ad tech industry, having previously held senior roles at major platforms. This appointment is part of OpenX's broader commitment to enhancing its supply-side offerings and supporting publisher partners.

    • OpenX appoints John Rogers as SVP of Global Publisher Development.
    • Rogers to lead global publisher development strategy.
    • Appointment announced on 2026-10-01.
View all signals for OpenX →

Compare their exact ecosystem overlaps.

Explore all deep relationships in Polaris7. Discover exactly which mutual clients, integrated technologies, and overlapping partners Onetag and OpenX share across the market ecosystem.

Start for freeOnetag ProfileOpenX Profile