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Onetag

Programmatic ad exchange for the open web.

Website
2019Active
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About

Onetag provides smart curation for the open internet, using AI-powered technology to filter out ad wastage at the source and deliver high-performing, relevant inventory to advertisers. Their platform offers cookieless, privacy-compliant solutions for marketers to improve addressability, reduce buying inefficiencies, and decrease operational overhead. Onetag serves both publishers and buyers by enabling direct access to premium advertising inventory at scale through their Global Exchange infrastructure.

Technology stack

detected 2026-06-15
Est. monthly stack spend~$210/mo
EmailMicrosoft 365
Hosting
AWS
Stack
jQueryBootstrapWordPress
Analytics
Google Analytics 4Google Tag Manager
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Frequently asked

What does Onetag do?

Onetag provides smart curation for the open internet, using AI-powered technology to filter out ad wastage at the source and deliver high-performing, relevant inventory to advertisers. Their platform offers cookieless, privacy-compliant solutions for marketers to improve addressability, reduce buying inefficiencies, and decrease operational overhead. Onetag serves both publishers and buyers by enabling direct access to premium advertising inventory at scale through their Global Exchange infrastr…

How much funding has Onetag raised?

Onetag has raised a total of $63M in funding. The most recent round on record is Series B.

Where is Onetag headquartered?

Onetag is headquartered in New York, New York, USA.

When was Onetag founded?

Onetag was founded in 2019.

What industry does Onetag operate in?

Onetag operates in Advertising, AdTech, Marketing Technology.