Onetag
Agent51Agent Readiness: 51/100. Top 25%. Measured by StartupHub.ai. Median 41.Trust72Data Trust: 72/100. Above median. Measured by StartupHub.ai. Median 61.Programmatic ad exchange for the open web.
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.
Listed competitors
Ansys engineering simulation and 3D design software delivers product modeling solutions with unmatched scalability and a comprehensive multiphysics foundation.
Taboola is a content discovery and native advertising platform that powers recommendations on premium publisher websites, reaching over 600 million daily active users.
“To everyone saying Native Ads (Taboola, Outbrain etc.) only buys you s**t traffic. I ran a small experiment because I keep seeing the same…” r/nativeadsgurus
Contextual intelligence platform for advertising and marketing.
Also in this space
Innovid powers connected TV (CTV) advertising streaming, personalization, and measurement for global brands.
Shares Advertising, AdTech
Unity is a leading platform for creating and operating real-time 3D content, empowering developers across gaming, film, automotive, and architecture.
Shares Advertising, AdTech
A technology company providing a self-service platform for advertisers to buy and manage digital advertising.
Shares AdTech, Marketing Technology
MNTN is a connected TV advertising platform.
Shares Advertising, AdTech
“Choosing between MNTN, Tatari and tvScientific and want to know what holds up after the sales calls. my main concerns are how honest the…” r/adops
DoubleVerify is a leading software platform for digital media measurement and analytics, ensuring brand safety, suitability, and performance for advertisers.
Shares Advertising, AdTech
AI startup helping marketing teams create social media ads more efficiently.
Shares Marketing Technology, Advertising
Key facts
- Website
- onetag.com
- Headquarters
- New York, New York, USA
- Founded
- 2019
- Business model
- B2B
Tech stack
Detected on onetag.com, last scanned 20 Oct 2026. Run your own scan
- Frontend
- jQuery, Bootstrap
- Analytics
- Google Analytics 4, Google Tag Manager
- SEO
- Rank Math
- CMS / Builders
- WordPress
- CDN
- Cloudflare
- Email provider
- Microsoft 365
Onetag scores 73. Does yours?
That is its Ahrefs DR: the backlink strength of a domain, on the Ahrefs 0 to 100 scale. Paste your website and you get yours in about a minute.
Frequently asked
Is Onetag trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Onetag is 72 out of 100, a generally safe rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for Onetag
