h2d.Anim is used to display an animated sequence of bitmap tiles on the screen.
h2d.Bitmap is used to display a single bitmap Tile on the screen.
CdbLevel will decode and display a level created with the CastleDB level editor. See http://castledb.org for more details.
h2d.Drawable is the base class for all 2D objects that will draw something on screen. Unlike Object base class, all properties of Drawable only apply to the current object and are not inherited by its children.
Adobe After effect player, see https://github.com/heapsio/keyframes/
h2d.Object is the base 2D class that all scene tree elements inherit from. It can be used to create a virtual container that does not display anything but can contain other objects so the various transforms are inherited to its children.
Allows a 2D object position to follow a 3D object using the current camera.
h2d.Scene is the root class for a 2D scene. All root objects are added to it before being drawn on screen.