Keys v1.1.61 for Blender

https://superhivemarket.com/products/keys

Blender 2.8 - 5.0

• Keys is a Blender add-on sold on Superhive (formerly known as Blender Market). It enhances Blender’s Graph Editor by letting you select multiple keyframes and edit their properties (like interpolation, values, and handles) all at once from a dedicated panel — something Blender doesn’t let you do easily by default.