Cursor is the strongest fit for building a simple web app, as it is an AI-powered code editor that actively helps you write both frontend UI code and server-side logic in one environment, with context-aware suggestions and inline chat for scaffolding components, routes, and APIs. It supports all major web frameworks and languages, so you can move from a blank project to a working app quickly. Windsurf is a solid alternative at a lower monthly price if budget is a priority. GitHub Copilot works well if you prefer to stay inside an existing editor like VS Code rather than switching tools. Cline is worth considering if you want a free, open-source option that plugs into VS Code and lets you bring your own model API key.