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Best Open-Source Alternatives to v0 (Vercel)

v0 is Vercel's AI website generator that outputs production Next.js + shadcn/ui code. People want alternatives that are free, open-source, run locally, or output to different frameworks (Vue, SvelteKit, plain HTML).

TL;DR — top pick

Bolt.new

Bolt.new from Stackblitz is the closest open-spirited v0 alternative. Free tier generous, paid plans cheaper than v0.

github.com/stackblitz/bolt.new

All 3 alternatives ranked

#1

Bolt.new

Self-hostable★ ~12k
github.com/stackblitz/bolt.new

Bolt.new from Stackblitz is the closest open-spirited v0 alternative. Free tier generous, paid plans cheaper than v0. Live preview in browser, ships full Next.js or Vite apps. Open-source CLI (bolt.diy) also available for full self-host.

Pick Bolt.new if

You want a generous free tier and faster live preview iteration than v0.

Skip if

You're deeply in the Vercel + shadcn ecosystem — v0 outputs are cleaner there.

#2

Bolt.diy

MITSelf-hostable★ ~11k
github.com/stackblitz/bolt.diy

Open-source self-hosted version of Bolt. Run locally with BYO API key (Claude, GPT, DeepSeek, Ollama). No subscription. The most flexible alternative if you want full control over the model + generation pipeline.

Pick Bolt.diy if

You want a fully self-hosted AI website builder with BYO model. Or you want to fine-tune on your own design system.

Skip if

You don't want to set up local infra — Bolt.new hosted is easier.

#3

Open Interpreter

AGPL-3.0Self-hostable★ ~60k
github.com/OpenInterpreter/open-interpreter

Not a direct v0 replacement, but Open Interpreter can scaffold and ship websites via CLI. Best for developers who prefer terminal + free-form prompting over a hosted UI.

Pick Open Interpreter if

You're comfortable in the terminal and want maximum flexibility — generate sites, scripts, anything.

Skip if

You want WYSIWYG website previews — v0 or Bolt are better.

More AI alternatives

Best Open-Source v0 (Vercel) Alternatives on GitHub (2026) — Bolt.new & more — StackPicks — StackPicks