Bolt.new
Bolt.new is an in-browser AI app builder from StackBlitz that turns plain-language prompts into running full-stack web applications, with WebContainers executing the code live and Bolt Cloud providing hosting, databases, and authentication. It is aimed at developers and technical builders who want to go from idea to deployed app without local setup.
Use Cases
Build a full-stack web app from a prompt in the browser
Prototype an app idea with no local setup
Import a Figma design and turn it into code
Deploy an app to a custom domain with hosting
Add a database and authentication to a web app
Edit and run code live in a browser IDE
Pros
Runs a full dev environment in the browser, no local setup
Most generous free tier among prompt-to-app rivals
Imports designs from Figma and repos from GitHub
Bolt Cloud bundles hosting, databases, and auth
Fastest prompt-to-deployed-app path of the major builders
Cons
Code quality more variable than competitors
Token allowance drains fast on larger projects
Breaks earlier changes when iterating on new ones
Runs only JavaScript and Node, no Python backends
Backend tied to the Bolt Cloud stack
Platforms
Web
Bolt gets you from prompt to a running full-stack app faster than anything else in the category, and it never leaves the browser tab, no install, no local server. On bigger builds the code quality wobbles, and your token budget evaporates faster than the generous-looking free tier implies.
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