Parameters are the options of a node. Changing the parameters changes the look or behavior of the node. For example, a 
Sphere geometry node has position and radius parameters.
For information on parameters and how to use the parameter editor, see the parameter editor pages of the network and parameters chapter.
A plug-in-based spreadsheet-like editor that gives you a unified interface to edit parameters and attribute values on nodes and geometry all over Houdini.
Channel list and channel groups
The channel list is used to select the parameters that are displayed in the animation editor and on the timeline.
Lets you assign materials to objects and primitives interactively.
The PDG Path Map manages the mapping of paths between file systems.
Allows you to manage assets you have downloaded from the asset store.
Allows you to manage Houdini Engine SessionSync.