ABAP Cleaner
What it is
An open-source ADT plugin that automatically reformats and modernises ABAP source toward the Clean ABAP style guide — one keystroke to apply dozens of clean-up rules to a file.
Why it matters for Clean Core
It removes the friction from Clean ABAP adoption: instead of arguing style in reviews, the cleaner enforces it mechanically, which frees migration effort for the real released-API work.
Common pitfall
Running it blindly across legacy code in one commit — the diff becomes unreviewable and can mask logic changes. Apply per-file as you touch code, and review what it changed.