Aider

Aider is a pioneering AI pair programming tool that works directly from your terminal with deep git integration. It maps your entire codebase for context, automatically creates commits with descriptive messages, and supports nearly every LLM provider. With 4.1M+ installations and processing 15 billion tokens per week, it's one of the most widely used AI coding tools. Features include voice-to-code, watch mode for IDE integration, image and web page context, browser mode, and support for 100+ programming languages.