AniMate Pro is a comprehensive set of animation tools for Blender that carries over some of the most requested features from Maya and AnimBot. It has been in close development with professional animators from Disney, Pixar, DreamWorks and other animation studios for over a year, and is released in early access, with users able to request features and report bugs directly to the developer.
The toolkit covers a wide range of keyframe work. Timeline Scrubbing turns a configurable key (default Space) into a modal that scrubs the timeline without moving the mouse from the viewport. Anim Lattice manipulates selected keyframes in the graph editor with a bounding box, while Anim Time Warper adjusts key timing on the fly using Pins, Bars and Easings. Anim Sculpt lets you sculpt directly over keyframes with proportional editing, described as essential for motion capture data.
Further tools include Anim Offset for proportional offsetting, Anim Nudge for shifting keyframes by a set amount, and Anim Poser for propagating poses across a range. The Graph and Dope Sheet editors also gain customizable top bars with four button themes and support for light Blender themes.