What it does

Dyad generates full-stack apps from prompts, like v0, Bolt, or Lovable, but runs entirely on your machine. You download it, plug in your own OpenAI/Anthropic/DeepSeek/etc. keys, and start building without signing up for anything or shipping code to someone else’s cloud.

The interesting bit

The “fair-source” split is the twist: core code is Apache 2.0, but src/pro is under Functional Source License 1.1, which means the pro features eventually become open-source after a time delay. It’s a sustainability bet — not pure FOSS, not fully proprietary either.

Key highlights

• Runs locally on Mac and Windows (no Linux mentioned)
• BYO API keys — no platform markup, no key escrow
• No account or sign-up required to download
• 20.5k stars and a small Reddit community at r/dyadbuilders
• Built in TypeScript, targets Next.js / React / Vercel-style stacks

Caveats

• The README is thin: no screenshots of the actual builder UI, no feature list beyond “fast, private, no lock-in”
• “Pro” features exist but aren’t defined anywhere in the README; you’ll need to dig into src/pro or the site to learn what’s gated
• Linux support is not mentioned

Verdict

Worth a look if you want AI-generated apps but distrust SaaS lock-in. Skip it if you need detailed docs upfront or a fully open-source stack with no delayed-release components.