Bolt.new

A full-stack builder that runs entirely in the browser

Built on StackBlitz WebContainers, Bolt.new runs your dev server inside the browser tab. You get an actual terminal, npm installs and file-level edits alongside the AI, which makes it the most developer-shaped of the prompt-first builders.

• Code ownership — Full source
• Database — Bring your own (Supabase)
• Authentication — Manual setup
• Deploy — Netlify integration
• Best first project — Prototype with real data

• Real terminal and file tree in the browser
• Framework choice is genuinely open
• Fast iteration loop with hot reload
• Easy export to a local repository

• Token usage climbs fast on big projects
• Assumes some development confidence
• Backend services need to be connected manually

• Developers
• Rapid prototyping
• Hackathons

Pick Bolt when you want to read and correct the code as it appears. It rewards people who already know what a good project structure looks like.