Aider

An AI pair programming tool that works directly in your terminal alongside git. Aider lets you have a conversation with AI about your codebase, make changes across multiple files, and automatically commit with sensible messages — all without leaving your command line workflow.

• Terminal-based — runs in your shell, integrating naturally with your existing workflow • Git-aware — understands your repo structure and auto-commits changes with clear messages • Multi-file editing — make coordinated changes across multiple files in one request • Model flexibility — works with GPT-4, Claude, local models, and any OpenAI-compatible API • Voice coding — dictate changes using speech-to-text integration • Map of the codebase — automatically indexes your repo for better context understanding

Free and open-source. Bring your own API keys for the AI model.