Where is the Node Editor in Blender 2.8? I can't seem to find the place, in Blender 2.8, where node-based addons lived in previous versions of Blender, such as Animation Nodes and Sverchok. Does anyone one know where that editor went, if it's being taken out for good or if something else is being developed?
That small drop down option next to object and choose the node editor you need such as Shader Editor. 

Or by hitting Shift + F3

As @prubini87 mentioned, if there are no nodes created the area will be empty.