Centroid 

Find centroid of a geometry

GeoJSON writer 

Write a GeoJSON file

Raster Calculator 

Raster calculator node

Reader 

This is a Database Reader.

Union 

This node computes union of geometries

Distance 

This node returns the minimum distance between two geometries

Rasterize 

This node burns vector geometries into a raster

Intersects 

Whether Geometry-1 intersects Geometry-2

Difference 

This node computes difference of geometries

Table Connector 

This is a Database Table Connection Test.TG