Show HN: PhenixCode – Local, open-source alternative to GitHub Copilot

1 points by nesall 5 hours ago

Hi all! I built PhenixCode — an open-source, self-hosted and customizable alternative to GitHub Copilot Chat.

Why: I wanted a coding assistant that runs locally, with full control over models and data. Copilot is great, but it’s subscription-only and cloud-only. PhenixCode gives you freedom: use local models (free) or plug in your own API keys.

Tech: Pure C++ core with RAG (HNSWLib for vector search, SQLite for metadata). UI is Svelte + webview — lightweight, cross-platform, and designed to be hackable.

Status: I’ve been dogfooding it for weeks; the core is stable. Would love feedback — whether you find it useful, hit bugs, or want to discuss design decisions. Happy to answer questions!