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

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