Key Frame animator Editor - open source
The Keyframe Editor allows you to create and edit keyframed channels for the Animation COMP.
To open the Animation Editor, change any pane to the Animation Editor pane type.
The Animation Editor will display the channels found inside the Animation COMP that is scoped, this is shown in the Path field. Change this path to edit a different Animation COMP by right-clicking on that COMP and selecting Edit Animation....
Click the Add Channel button to create a channel and start animating. The editor lets you create and delete channels, as well as add, edit, or delete keyframes.