Sunder: The Open‑Source AI Coding Assistant That Translates, Explains, and Pairs With You

#opensource #ai #javascript #nextjs

The Problem

Every developer knows the drill:

You find a brilliant Python snippet, but your project is in JavaScript.
You want a second pair of eyes, but scheduling a code review takes days.
Copilot helps, but it’s proprietary, doesn’t explain why, and can’t translate.

Sunder fixes all of that; and it’s now open source.

What Is Sunder?

Sunder is an AI‑powered collaborative platform for code snippets. Think GitHub Gists meets Figma meets Gemini.

With Sunder you can:

Save & discover snippets across 50+ languages
Translate code between languages with functional equivalence
Pair program with an AI that learns your style
Real‑time collaborate on snippets with cursors, chat, and video
Get explanations and refactoring suggestions on demand

All inside a beautiful Next.js + Tailwind UI.

Why Open Source?

We believe developer tools should be transparent, community‑owned, and accessible to everyone.

By open‑sourcing Sunder we’re saying:

You shouldn’t need a corporate budget to have an AI pair programmer.

We also want to build the best AI‑first coding platform – and that can only happen with contributions from developers like you.

Try It in 60 Seconds

git clone https://github.com/kawacukennedy/sunder
cd sunder
./scripts/setup.sh

That’s it. Docker Compose spins up PostgreSQL, Redis, and a mock AI server – you don’t even need a Gemini API key.

Then open http://localhost:3000 and start exploring.

🧩 What Needs Help?

We’ve curated 20+ “good first issues” with detailed instructions and mentors.

Area	Example Issue
🎨 Frontend (React)	Add syntax highlighting for Rust
⚙️ Backend (Node)	Optimize snippet search with trigram indexes
🧠 AI (Gemini)	Improve translation accuracy for Go → TypeScript
📚 Docs	Write a tutorial for real‑time collaboration