Replit lets you code in your browser with AI assistance built in. Its Ghostwriter feature completes code, explains functions, and transforms code between languages. Replit Agent can build full applications from descriptions. Great for beginners learning to code and experienced devs prototyping quickly. Free tier available; Replit Core ($25/month) for full AI features.
**Key takeaway:** Replit = browser-based coding with AI that builds full apps.