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Codex CLI is OpenAI's open-source coding agent. It reads your repository, proposes and applies changes, and runs commands in a sandbox, with approval modes that control how much it can do on its own.
npm install -g @openai/codexMore in CLI Tools
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Aider
AI pair programming in your terminal that edits code and commits to git for you.
python -m pip install aider-install
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Anthropic's agentic coding tool that lives in your terminal and edits your codebase.
npm install -g @anthropic-ai/claude-code # Node.js 18+
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ripgrep
Line-oriented code search (rg) — recursively searches directories for a regex, respecting .gitignore, far faster than grep.
brew install ripgrep
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