Aider

Aider is a command-line tool that enables developers to pair program with large language models while working on codebases. It helps developers start new projects or modify existing code by integrating AI assistance directly into the terminal. The tool works with a range of language models including Claude, OpenAI's models, DeepSeek, and other local or cloud-based LLMs. Aider includes features like codebase mapping, support for over 100 programming languages, automatic git integration with commit messages, and the ability to add images and web pages for context.

Developed by Aider-AI, Aider is written in Python and is distributed under the Apache Software License 2.0. The tool can be installed via pip and can be used standalone in the terminal or integrated into various code editors and IDEs. It supports voice input for code requests and includes linting and testing capabilities to verify changes made by the AI.