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Aider vs Junie: catalog facts
Aider	Junie
Free Aider itself is free and open source under Apache 2.0. You pay whatever your chosen model…	Freemium Free to start with no card or subscription required; paid plans and bring-your-own-key…
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Commits every change to git automatically, so the usual diff and revert tools work Maps the whole codebase, which is what makes it usable on projects of real size	Works in the terminal, JetBrains IDEs, GitHub and GitLab Editable plan files reviewed before code changes
Needs an API key and per-token spend unless you run a local model Terminal-driven; there is no graphical interface	Depends on external AI models and their costs Deepest integration is with JetBrains tools
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.