Codex CLI

Anthropic's agentic coding tool that lives in your terminal and IDE, understands your codebase and executes multi-step changes.

Google's open-source agent that brings Gemini models into the terminal, with MCP support and built-in tools.

Open-source coding agent with a polished terminal UI that works with dozens of model providers.

Open-source autonomous coding agent available as an IDE extension, CLI and SDK, with human-in-the-loop approvals.

Open-source, extensible on-machine agent (desktop + CLI) that uses MCP extensions and any LLM.

Pioneering open-source AI pair programmer for the terminal that edits code and commits to Git.