Node Connectivity
There are 176 nodes that can be used as predessesor
for a node with an input port of type 
org.knime.core.node.port.AbstractPortObject.
Java Distance
Define distance measures with the usage of Java code.
Distance Matrix Calculate
Calculates distance matrix on input table and appends result as (typed) column.
Network Viewer
A JavaScript Network Viewer is using a JavaScript based Graph theory / network library cytoscape.js.
Network Viewer (local)
Visualizes a network.
Tag Cloud
Creates a tag cloud
Python View (legacy)
Allows executing a Python script in a local Python environment.
R R-View Deprecated
Enables the usage of R views using the local R installation.
Table R-View Deprecated
Enables the usage of R views using the local R installation.
R View (Remote) Deprecated
Enables the usage of R views generated on an R server.
R View (Table)
Generates images in KNIME of R views from a local R installation.