ProTrajectoryHandles (PTH) creates in-viewport handles on trajectories. ProBezierAssist is included as well in the UI, making it easy to retime animation without altering the path.

Highlights:

• Directly edit trajectories in the viewport including handles.
• Easily translate or rotate (part of) a trajectory.
• Alter time distribution without changing the trajectory itself. (see video)
• Compatible with complex animated hierarchies such as rigs.
• Supports both the default Position_XYZ controllers as well as those placed in Position_Lists
• Optionally displays  velocity using a color gradient on the trajectory
• Optionally use object’s wire color as trajectory
• Optionally only create handles for selected keys.
• PTH is bidirectionally synced with the trackview, changes made in one are reflected in the other