Replit

Replit is a browser-based coding platform that lets people write, run, and host software without installing anything locally. It provides a full online development environment supporting dozens of programming languages, along with real-time collaboration, integrated hosting, and an AI agent that can build and modify applications from natural-language instructions.

The platform serves developers, students, educators, and hobbyists who value instant setup and the ability to code from any device. Its collaborative editor allows multiple people to work in the same project simultaneously, while the AI Agent lets users describe an app and watch it get scaffolded, making it popular for learning and rapid prototyping.

Replit follows a freemium model, with paid tiers unlocking more compute, private projects, and expanded AI usage. Founded in 2016 and based in Foster City, California, it has grown into a large online developer community.