3 open-source AI code completion you can use instead of GitHub Copilot. Self-described alternatives are labelled separately from our own picks.
These projects describe themselves as an open-source alternative in their own README or GitHub description.
TabbyML/tabby
Self-hosted AI coding assistant (code completion + chat) you run on your own GPU or CPU server, with IDE extensions.
Says it is an open-source alternative to GitHub Copilot (from its README)
docker run -it --gpus all -p 8080:8080 -v $HOME/.tabby:/data tabbyml/tabby serve --model StarCoder-1B --device cuda --chat-model Qwen2-1.5B-InstructEditorial picks: open-source projects that do a similar job to GitHub Copilot.
twinnydotdev/twinny
VS Code extension for code completion, chat, edits and reviews using local (e.g. Ollama) or hosted models.
npx twinny-server quickstartStars, licences and last-commit dates come from the GitHub REST API, fetched 17 Oct 2026. Archived repos, repos with no commit in 12 months and non-open licences are excluded. Install commands are copied from each README.
Our picks: Tabby, twinny, Continue. Each one is open source; check the licence before commercial use.
Tabby describe themselves as an open-source alternative in their own README or repo description.
The software is free to use under its licence. You still pay for your own hosting and for any model API you connect, unless you run a local model.
Cursor · Claude Code · Lovable, Bolt.new and v0 · ChatGPT · Perplexity · Notion · NotebookLM · Vercel, Netlify and Heroku