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Claude Code is an agentic coding tool that works with the surrounding codebase to carry out routine tasks, explain complex code, and manage Git workflows from natural-language instructions. It can be used in a terminal or IDE and can participate on GitHub when tagged as @claude. The repository also includes plugins that add custom commands and specialized agents.

Gemini CLI lets developers work with Gemini directly from a terminal to inspect repositories, generate or edit code, debug issues, and run tool-assisted workflows. It includes file, shell, web, and search tools, supports MCP extensions and non-interactive scripting, and offers Google sign-in, API key, or Vertex AI authentication. A personal Google account can use the documented free tier.

Claude Squad runs coding agents such as Claude Code, Codex, Gemini, and Aider in separate Git worktrees, so several tasks can progress without colliding. Its tmux-based terminal interface keeps sessions alive, shows diffs for review, and lets you check out or push approved changes. tmux and GitHub CLI are required.

Launch Chromium or attach to an existing Chrome session, then navigate, click, fill forms, inspect pages, and capture screenshots through the Playwright API while keeping pages alive across scripts. Dev Browser runs code in a QuickJS WASM sandbox without host access and restricts file operations to its own temporary directory, making it suitable for browser automation by coding agents.