Aescripts Keyframe Manager is a streamlined interface for managing keyframes with ease and efficiency. It allows users to view, edit, and rearrange keyframes visually, modify values and easing types, and shift keyframes by set amounts. The tool includes features like search and replace for quick adjustments, as well as copy and paste functionality to replicate keyframe data. Users can also save and reuse their favorite easing settings, making the animation process faster and more customizable.