"Pretty Nodes" — addon for clean and readable node trees in Blender.

Key Features:

Nodes Palette

Custom palette for node colors with context menu.

• Adding named colors
• Apply to all selected nodes through context menu "Pretty Node Colors"
• Palette persists between sessions

Reroute Helper

Tools for working with Reroute chains.

• Automatic sequential connection of selected reroutes
• Select and Clean Orthogonal Chain
• Assign Label by root node. Automatically add label for each reroute in chain or only start and end.

Frame Helper

Manage frame label sizes.

• Change label size for selected frames
• Option to apply to all frames
• Option for root frames only
• Quick frame selection (e.g. for simultaneous color change)
  
  

Node Aligner

Simple tools for aligning selected nodes.

• Align to top, bottom, left or right edge
• Control distance between nodes

Location: Node Editor (Shader Editor \ Compositor \ Geometry Nodes) → Sidebar → Pretty Nodes