Aider — #2 Alternative to GitHub Copilot
Git-native terminal pair programmer with AST repository maps and automatic commits
Aider operates directly in your terminal alongside Neovim, Emacs, or any IDE—building tree-sitter repository maps across large monorepos, applying surgical diffs, running your linter/test suite, and crafting atomic Git commits.
License: Apache-2.0 · Pricing: Free & Open Source · Compare all GitHub Copilot alternatives · Official Website