BB Nodes is an add-on for Blender that creates a custom sub menu in the Add menu of the geometry nodes workspace that gives you access to numerous custom-made node groups that improve and speed up procedural modeling with Geometry Nodes. 

There are, as of this moment, 98 group nodes, that are a huge lifesaver for anyone working with geometry nodes. 

Some of the most useful ones are: Inset, Array, Offset, Extrude along path, Bend, Taper, Screw, Twist, Stretch, Solidify, Mirror and may others.

An extensive 192 pages User guide of all nodes is available here: BB NODES USER MANUAL

There is a quick review on this Add-on here: 
https://youtu.be/UBUtlLEEvSw
and a review of new nodes in the 1.3.1 version for Blender version 3.4 here:
https://youtu.be/aVB0MiyTTyA

Changes and Updates

- version 1.1.1. - first version

- version 1.2.1. (for Blender 3.3 and older)

new Nodes:
1. Bridge
2. Curve Extender
3. Shear
4. UV Mapping
5. Reverse Field
6. Edge Path Curve
7. Quad
8. Edge Path Selection
9. Switch 20 Float
10. Switch 20 Vector
11. Switch 20 Material

- version 1.3.1. (Blender 3.4.0 or higher)

Big updates on nodes:
 1. Bend
 2 Upright Extruder

new Nodes: 

1. Autosmooth
2. Knife

- version 1.3.2. (Blender 3.4.0 or higher)

Updated INSET node - Added support for multiple mesh islands 

- version 1.3.3. (Blender 3.4.0 or higher)

Fixed bug with BB_Switch 20 Vector

- version 1.3.4. (Blender 3.4.0 or higher)

Fixed bug with BB_Distance Between 2 Points

- version 1.3.5. (Blender 3.4.0 or higher)

Added Limits to the Bend Node - see VIDEO 

- version 1.4.1. (Blender 4.0.0 or higher)

New Nodes:

1. Dissolve Vertices
2. Extrude Edges with Loopcuts
3. Extrude Faces with Loopcuts
4. Stretch CAD
5. Identical Values Counter
6. Lowest/Highest Field Value
7. Smooth Geometry
8. Wireframe

Updated Nodes:

1. Extrude curve along path
   - Allows multiple curves inputs
2. Offset
   - Allows multiple curve inputs
3. Display Attributes
   - new Repeat zone implementation
   - added option to limit the display of only some of the vertices
4. Taper
   - added the option to change the position of the center

- version 1.4.2. (Blender 4.1.0)

Updated Extruder Along Path Node
   - fixed a bug

- version 2.1.1. (Blender 4.2.0)

- version 2.1.2. (Blender 4.2.0 or higher)

   - replaced deprecated nodes