# Open-source alternatives for AI app builders

> Describe an app in plain words and get working code, with tools you run yourself on your own model keys.

## Paid products
- [Open-source alternatives to Bolt.new](https://repoquarry.dev/alternatives/bolt-new.md): StackBlitz's hosted AI app builder. You prompt it in the browser and it writes, installs and runs a full-stack JavaScript app in an in-browser WebContainer, with hosting, a database, Expo mobile apps and Figma import. Usage is metered in tokens on paid plans. Pricing: See pricing page.
- [Open-source alternatives to Lovable](https://repoquarry.dev/alternatives/lovable.md): Hosted AI app builder. You describe a web app in chat and it writes and runs the code, with a live preview, a built-in backend (Lovable Cloud / Supabase), visual editing, GitHub sync and one-click publishing. Usage is metered in credits on paid plans. Pricing: See pricing page.

## Top ranked projects
1. [OpenDesign](https://repoquarry.dev/projects/open-design.md): Local-first desktop workspace where a coding agent or your own model key turns a brief into web prototypes, slides, images and motion graphics. Commercial use: Confirmed.
2. [Screenshot to Code](https://repoquarry.dev/projects/screenshot-to-code.md): Turns screenshots, mockups, Figma designs or screen recordings into front-end code (HTML/Tailwind, React, Vue and more) using cloud AI models. Commercial use: Confirmed.
3. [OpenUI](https://repoquarry.dev/projects/openui.md): Describe a UI in words and see it rendered live as HTML, then convert it to React, Svelte or Web Components. UI only, no backend. Commercial use: Confirmed.
4. [Dyad](https://repoquarry.dev/projects/dyad.md): Free desktop AI app builder that writes and runs JavaScript web apps on your computer, using your own model keys or local models. Commercial use: Partial.
5. [bolt.diy](https://repoquarry.dev/projects/bolt-diy.md): Self-hosted, open-source version of Bolt.new that builds and runs full-stack web apps in the browser with 22+ model providers, including Ollama. Commercial use: Partial.
6. [Open Lovable](https://repoquarry.dev/projects/open-lovable.md): Firecrawl's example app for chatting with AI to build React apps, mainly by cloning an existing website. Needs Firecrawl and a cloud sandbox. Commercial use: Confirmed.
7. [Chef](https://repoquarry.dev/projects/chef.md): Convex's AI app builder, built from bolt.diy, that generates full-stack web apps with a Convex database, auth, file uploads and realtime UI. Commercial use: Confirmed.
8. [sandboxd](https://repoquarry.dev/projects/sandboxd.md): Self-hosted engine and web console where a coding agent builds apps from a prompt in isolated Docker sandboxes on your own server, each with a preview URL. Commercial use: Confirmed.
9. [Onlook](https://repoquarry.dev/projects/onlook.md): Browser-based visual editor for Next.js + Tailwind apps. Create from a prompt or image, then edit by clicking and dragging with AI help. Commercial use: Confirmed.
10. [Llama Coder](https://repoquarry.dev/projects/llamacoder.md): Open-source take on Claude Artifacts that generates small React apps from one prompt or a screenshot, using open models hosted on Together AI. Commercial use: Confirmed.
11. [Fragments](https://repoquarry.dev/projects/fragments.md): Next.js template from E2B that generates small Next.js, Vue, Streamlit, Gradio or Python apps from a prompt and runs them in E2B cloud sandboxes. Commercial use: Confirmed.
12. [Claudable](https://repoquarry.dev/projects/claudable.md): Local Next.js app builder that drives a coding-agent CLI you already use (Claude Code, Codex, Cursor, Qwen Code) to build web apps with a live preview. Commercial use: Confirmed.
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Source: RepoQuarry (https://repoquarry.dev/categories/app-builders). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.