Aider

About

Aider is an open-source AI pair programming tool that operates directly in your terminal with deep Git integration — one of its key differentiators. Unlike most AI coding tools that work inside an editor or IDE, Aider runs as a command-line tool that understands your entire Git repository, reads files it needs, suggests and applies changes, and automatically commits them with sensible commit messages. This tight Git integration means every AI-made change is tracked, reversible, and documented as part of your project history. Aider excels at multi-file edits: it can refactor code across your entire project, adding new features, fixing bugs, or restructuring modules while maintaining coherence across all modified files. The map of your repository gives Aider a high-level understanding of your project structure, helping it decide which files to read and modify for each task. Aider supports all major LLM providers: OpenAI, Anthropic, Google, and local models via Ollama, with Claude (particularly Sonnet and Opus) recommended for complex tasks due to their superior code reasoning. The tool includes a chat interface where you can discuss changes, ask questions about your codebase, and iterate on solutions before applying them. Because Aider is terminal-based, it works with any editor — VS Code, JetBrains, Vim, Emacs — and integrates well with tmux or other terminal multiplexers. For developers who prefer working in the terminal and want AI assistance that respects their Git workflow, Aider provides a seamless, transparent experience where the AI is a true collaborator in the version control process.

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