Aider

Aider is an AI pair programming tool designed to enhance the software development process by enabling developers to work collaboratively with Large Language Models (LLMs) directly within their terminal. It supports both starting new projects and building upon existing codebases, making it a versatile tool for various development needs.

Aider works with a wide range of LLMs, including Claude 3.7 Sonnet, DeepSeek R1 & Chat V3, OpenAI o1, o3-mini & GPT-4o, and can connect to almost any LLM, including local models. This flexibility allows developers to choose the LLM that best suits their project requirements and preferences. Aider maps the entire codebase, which helps it work effectively in larger projects. It supports over 100 programming languages, including popular ones like Python, JavaScript, Rust, Ruby, Go, C++, PHP, HTML, and CSS.

Key features of Aider include Git integration, which automatically commits changes with sensible commit messages, enabling easy diffing, management, and undoing of AI changes using familiar Git tools. Developers can use Aider from within their favorite IDE or editor by adding comments to their code, prompting Aider to implement the requested changes. It also supports adding images and web pages to the chat to provide visual context, screenshots, and reference documentation.

Additionally, Aider supports voice-to-code functionality, allowing developers to request new features, test cases, or bug fixes using their voice. The tool also includes linting and testing capabilities, automatically linting and testing code every time Aider makes changes, and fixing problems detected by linters and test suites. For LLMs accessed via web chat interfaces, Aider streamlines copy/pasting code back and forth with a browser.