MarTech startups in San Francisco Bay Area

Tofu

San Mateo

Tofu is an early-stage generative AI startup based in San Mateo, CA, backed by Index Ventures and SignalFire; it aims to build a unified platform for hyper-personalized, omnichannel B2B marketing campaigns at scale for mid-market and enterp

AirOps

San Francisco

AirOps is the first end-to-end content engineering platform for marketing teams, helping brands get found and stay found in the AI era. With hubs in San Francisco, New York, and Montevideo, it serves marketers and is backed by prominent inv

Conversion

San Francisco

Conversion is a modern marketing automation platform for high-growth teams, making B2B marketing faster, smarter, and more personal. Trusted by over 5,000 businesses, it serves customers like Abacum, Clay, Hockeystack, and 11x, helping team

Replo

San Francisco

Replo, a San Francisco-based company, builds agentic commerce for the internet and grew to 1,000+ paying customers in under a year with no sales or marketing budget, while raising over $8.4 million in seed funding from notable investors.

Optimizely

San Francisco

**The first all-in-one operating system for marketing** At Optimizely, we're on a mission to help people unlock their digital potential. We do that by reinventing how marketing and product teams work to create and optimize digital experien

Apollo.io

San Francisco

Apollo.io helps businesses fulfill their market potential by connecting companies with solutions; based in San Francisco, California with a global remote team, it maintains a database of 250 million contacts and 10 million companies and is

Relixir

San Francisco

Relixir is an autonomous search share maximization platform serving 40+ B2B clients. Founded by Berkeley alumni, it participated in Y Combinator's X25 batch and ranks as one of its fastest-growing companies.

OneSignal

San Mateo

OneSignal began as a developer-friendly push notification API and has grown into omnichannel customer engagement platform, serving 1.8 million marketers, developers, and 1 million businesses, delivering 12 billion messages daily across 140

JustAI

San Francisco

JustAI is a marketing technology company that uses AI to enable 1-to-1 hyper-personalized messaging and continuous always-on testing, reducing operational overhead and accelerating rapid marketing experimentation by moving away from traditi