Fizz

Fizz is an anonymous social networking platform built specifically for college and high school campus communities. Students verify their identity using a school email address, then gain access to their campus-specific feed where they can post anonymously and engage with peers. The platform operates across 700+ schools including Stanford, MIT, Princeton, Yale, and Berkeley, with separate communities for each institution to keep conversations hyper-local. In addition to social content, Fizz launched a peer-to-peer marketplace in 2024 where students buy and sell items such as textbooks, clothing, bikes, and furniture. Content moderation is handled by a combination of 4,000 volunteer campus moderators and automated AI-powered moderation built on OpenAI technology. Fizz was founded by two Stanford dropouts, Teddy Solomon and Ashton Cofer, and is headquartered in Palo Alto, California near Stanford's campus.