Open Emergent is the open-source AI website builder. Describe what you need. We generate it — production-grade, instantly deployed, and 100% yours to keep.
Trusted by builders worldwide
Three capabilities. One unified engine. Start anywhere — Open Emergent carries everything you already know into your next step.
Describe any website, app, or tool in plain English. Open Emergent asks clarifying questions, then generates a real multi-file React + Tailwind app — running live in your browser before you ship it.
Chat with your app like you chat with a teammate. Request changes, add features, fix bugs — all without touching a line of code. Or drop into the full code editor with diffs if you want to.
Deploy to a live Vercel URL or export the full source to GitHub — no lock-in, no black box. MIT-licensed and self-hostable, so you own everything you build.
01
Describe what you want.
Type any idea, problem, or use case. Add a doc or link for extra context. No spec needed.
02
Emergent generates it.
A fully working, production-grade app is built in seconds. Not a prototype — a real app.
03
Preview and iterate.
See your app live in the editor. Chat to make changes. No re-explaining, no lost context.
04
Ship it. Own it.
One-click deploy. Export the source. Your domain. Your code. No lock-in, ever.
Connect your own OpenRouter, OpenAI, Anthropic, or Gemini API key. We never see it — it lives in your browser session only.
Start building freeFork it. Star it. Run it locally. MIT-licensed, built in public. Contributions welcome.
View on GitHubWe don't store your API keys or generated code on our servers. Export the full source anytime. You own everything.
Solo founders. Product teams. Sales leaders. All using Emergent to think, decide, and build — in one place.
Alex Chen
@alexchen_dev
"I shipped a full SaaS in one afternoon. Open Emergent just gets it — no prompting gymnastics, no babysitting."
Priya Shah
Founder, Nexora
"The ability to bring my own OpenRouter key and use the latest models is what sold me. Total control."
Marcus T.
@marcus_builds
"Cursor for builders who don't want to touch code. The editor is buttery smooth and the output is real production code."
Lena Koch
@lena_ux
"I've tried Lovable, Bolt, and Replit. Emergent outputs cleaner React code and the preview is instant."
Jordan Wei
Product, Stride
"Handed off a prompt in the morning, had a working MVP by lunch. My dev team was shocked."
Alex Chen
@alexchen_dev
"I shipped a full SaaS in one afternoon. Open Emergent just gets it — no prompting gymnastics, no babysitting."
Priya Shah
Founder, Nexora
"The ability to bring my own OpenRouter key and use the latest models is what sold me. Total control."
Marcus T.
@marcus_builds
"Cursor for builders who don't want to touch code. The editor is buttery smooth and the output is real production code."
Lena Koch
@lena_ux
"I've tried Lovable, Bolt, and Replit. Emergent outputs cleaner React code and the preview is instant."
Jordan Wei
Product, Stride
"Handed off a prompt in the morning, had a working MVP by lunch. My dev team was shocked."
Ravi Menon
@ravi_mn
"Open source + BYOK is the killer combo. I know exactly what's happening to my data."
Sophie Brandt
GTM Engineer
"The natural language editing is wild. I asked it to 'make the hero more dramatic' and it just... did it."
Dev Patel
@devbytes
"Export source code is not a gimmick here. The code is clean, typed, and ready for a real team."
Chiara V.
@chiara_v
"100x better than any no-code builder I've used. And I've tried all of them."
Tom Bailey
YC Alum
"We use Emergent for rapid prototyping. Stakeholder demos that used to take a week now take 20 minutes."
Ravi Menon
@ravi_mn
"Open source + BYOK is the killer combo. I know exactly what's happening to my data."
Sophie Brandt
GTM Engineer
"The natural language editing is wild. I asked it to 'make the hero more dramatic' and it just... did it."
Dev Patel
@devbytes
"Export source code is not a gimmick here. The code is clean, typed, and ready for a real team."
Chiara V.
@chiara_v
"100x better than any no-code builder I've used. And I've tried all of them."
Tom Bailey
YC Alum
"We use Emergent for rapid prototyping. Stakeholder demos that used to take a week now take 20 minutes."
Questions worth answering
You already know what you're trying to build. Type it. Emergent handles everything after that.