Ad Fontes Media
Technology, Information and InternetColorado, United States11-50 Employees
Ad Fontes Media is a technology, information and internet company based in Westminster, Colorado (ZIP 80031) with 11-50 employees. It rates the news for reliability and bias, and its data are used by advertisers, publishers, ad tech companies, researchers, educators, and individual citizens. The company offers products and services to help advertisers invest in highly reliable, minimally biased news and to help publishers improve, showcase, promote, and monetize high-quality journalism through third-party audits and technology tools. Ad Fontes Media is incorporated as a Public Benefit Corporation in Colorado. The company has launched the Media Bias Chart and has pursued partnerships with industry players, including Viant in 2026 to connect TV ad inventory with its reliability and bias scores.