Aider

Open-source AI pair programming in the terminal.

Key facts

• Use case: AI coding IDEs & agents
• TestedTools score: Testing in progress
• Pricing: Free, open source (Apache-2.0); you pay your own LLM API costs partial (source, checked 2026-10-15)
• Affiliate: unknown

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Alternatives

• Cursor
• Windsurf
• Claude Code
• OpenAI Codex
• GitHub Copilot
• Cline
• Zed
• OpenCode
• Pi

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