tools
Aider Review 2026 — Open-Source AI Coding Agent for Your Terminal
Aider is the leading open-source AI pair programmer for the terminal. Bring your own API key, get multi-file edits with automatic Git commits. Rated 4.4/5.
Aider lets developers chat with language models about a codebase, create or modify files, run shell commands, and review changes through Git. It builds a repository map to provide context and can work with cloud or local models.
It supports terminal, browser, IDE, voice, image, and web-page workflows. Aider itself is free and open source, but most model usage requires an API key and provider charges may apply.
Features
- Edits files through an interactive terminal chat
- Maps the codebase to provide repository context
- Automatically commits changes with Git
- Runs linters and tests and helps fix detected problems
- Connects to cloud and local language models
- Adds images and web pages to coding chats
- Supports voice-to-code requests
- Apache 2.0 licensed open-source software
Use cases
- Build a new project from a natural-language request
- Refactor multiple files in an existing Git repository
- Run tests and fix failures after code changes
- Review or undo AI-generated changes with Git
- Use voice requests to implement features or bug fixes
- Apply model-generated edits while working in an IDE