EaseCopy is a script for After Effects by Mike Overbeck for transferring keyframe eases and values independently. It copies and pastes eases without overwriting your values, and copies and pastes values without overwriting your eases.
The script includes shortcut scripts so you can assign its functions to keyboard shortcuts, and it works with KBAR without the strict memory limitations of earlier versions. Installation can be automated through the aescripts + aeplugins manager app, which places the standalone scripts in the correct folders. Compatibility spans a wide range of After Effects releases, from CS6 through the 2026 version.
Version 1.7.3 improved alerting and handling of write permission issues in the userData folder. A demo video is available, and current licensing is listed on the developer's page.