Resonance

Resonance is a B2B company located in San Francisco, CA, specializing in providing a headless content management system (CMS) designed specifically for in-product marketing. As a participant in Y Combinator’s W24 batch, Resonance serves clients primarily in the United States and Canada. The company’s platform supports the creation of in-product messages such as onboarding and activation, engagement, conversion, and retention and churn reduction, with a focus on converting customers into power users. Resonance’s CMS allows full customization of message appearance, including font, color, style, and content, and supports embedding messages directly into products, moving beyond traditional popup formats. The platform is particularly suited for companies with websites built on React and is designed to be accessible for both technical and non-technical users, enabling them to launch campaigns in minutes. Resonance’s system includes features for setting up contextual triggers that respond in real-time to user behaviors, sophisticated guardrails for impression management to prevent user churn, and allows experimentation with multiple campaign variants to optimize conversion rates. Additionally, the company provides campaign analytics, intelligent targeting, and showcases real-life examples of in-product messages for inspiration on their Examples page. The onboarding process for new clients is notably quick, typically completed within 30 minutes.