The best open source alternative to Claude Code is Void. If that doesn't suit you, our users have ranked more than 50 alternatives to Claude Code and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Claude Code are Gemini CLI, opencode, Mellum and TabbyML.
Claude Code alternatives are mainly AI Coding Assistants, but if you're looking for
Large Language Model (LLM) Tools or AI Chatbots you can filter on that. Other popular filters include
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EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Claude Code.