Replit

Coding and Development - Pricing: freemium - Editor rating: 3.5/5 - https://replit.com

A browser-based coding platform whose AI agent builds and deploys complete apps from a description.

Replit combines an in-browser development environment with an AI agent that plans, writes, tests, and deploys applications from a prompt. Nothing to install - the whole workflow, including hosting, lives in the browser. It is popular for learning, prototyping, and shipping small tools fast. The free tier lets you explore, while the agent's heavier work is metered on paid plans.