Sidekick, an open source Claude Code alternative
Your agentic CLI developer. Contribute to geekforbrains/sidekick-cli development by creating an account on GitHub.
Sidekick, an open source Claude Code alternative launched on April 16, 2025 with 25 votes, #802 of 7,818 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Sidekick is an open source development tool designed as an alternative to Claude Code. Built for developers who want a comparable coding assistant with open source transparency, it provides code-related functionality accessible through GitHub. The tool appeals to developers seeking flexibility and community-driven development over proprietary solutions.
written from the facts on this page · September 2026
From the sources
Sidekick is an agentic CLI-based AI tool inspired by Claude Code, Copilot, Windsurf and Cursor. It's meant to be an open source alternative to these tools, providing a similar experience but with the flexibility of using different LLM providers (Anthropic, OpenAI, Google Gemini) while keeping the agentic workflow. Sidekick is currently in beta and under active development. Please report issues or share feedback! pip install sidekick-cli On first run, you'll be asked to configure your LLM providers. sidekick Configuration After initial setup, Sidekick saves a config file to ~/.config/sidekick.json . You can open and edit this file as needed. Future updates will make editing easier directly…from github.com
Does a similar job
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Open-source CLI coding framework using Claude2024 · github.com · ▲84AI powered cli coding agent that monitors your dev/test server and fixes errors and adds features - vysakh0/dravid
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GitHub Agent HQFeb 2026 · github.blog · ▲192Run Claude, Codex & Copilot directly in GitHub & VS Code
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