Fragments is an Apache-2.0 Next.js app by E2B, the open-source counterpart to Claude Artifacts or v0. You prompt it, it writes a small app (Next.js, Vue.js, Streamlit, Gradio or a Python script) and runs it in an E2B cloud sandbox with a live preview. It supports OpenAI, Anthropic, Google, Mistral, Groq, Fireworks, Together AI and Ollama, but an E2B API key is always needed because code runs on E2B's cloud. No database, auth or publishing for the generated apps. Active in October 2026.
Cite this pageRepoQuarry. “Fragments.” Checked 16 Oct 2026. https://repoquarry.dev/projects/fragments
How much of Lovable does it replace?
2 of 6 jobs. Single-file prototypes and data apps with a preview; no backend setup, editing canvas or publishing.
Partial:Build a full-stack web app from a chat promptPartial replacement
Partial:See the running app update as it is builtPartial replacement
No:Change the UI by clicking on it (Visual Edits)Not covered
No:Add a databaseNot covered
No:Publish the app to a live URL (Publish)Not covered
No:Turn a screenshotNot covered
For change the UI by clicking on it (Visual Edits), add a database, publish the app to a live URL (Publish), turn a screenshot, see other Lovable alternatives. You may also need to build an interface, an API server and hosting yourself.
How much of Bolt.new does it replace?
2 of 6 jobs. Code runs in E2B cloud sandboxes instead of the browser; small apps only.
Partial:Build a full-stack web app from a chat promptPartial replacement
Partial:Run and preview the app in the browser (WebContainers)Partial replacement
No:Add a database and login (Bolt Database / Supabase)Not covered
No:Publish the app to a live URL (Bolt hosting / Netlify)Not covered
No:Build a mobile app from a prompt (Expo)Not covered
No:Turn a screenshot or design into an app (image or Figma import)Not covered
For add a database and login (Bolt Database / Supabase), publish the app to a live URL (Bolt hosting / Netlify), build a mobile app from a prompt (Expo), turn a screenshot or design into an app (image or Figma import), see other Bolt.new alternatives. You may also need to build an interface, an API server and hosting yourself.
Facts, with sources
Every answer links to where we found it. We read the documentation; we did not install it.
Runs on my machine?Partial:The web app runs on your machine, but generated code runs in E2B's cloud sandboxesto securely execute code generated by AI.github.com · fragments#features ↗1d ago
Paid services needed?No:An E2B API key (hosted sandbox service) is required; the LLM can be local via OllamaE2B API Keygithub.com · fragments#prerequisites ↗1d ago
Operating systemsUnknown:README documents a Next.js developer app and remote E2B sandboxes; its Debian-based sandbox example does not establish support for the developer's Windows/macOS/Linux hostgithub.com · fragments#readme ↗today
Setup effortConfirmed:Medium; clone, npm install, set E2B and model keys, run the dev serverRecent version of Node.js and npm package managergithub.com · fragments#get-started ↗1d ago
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