Blender Market - Node Bar v1.1

Node Bar lets you add shader nodes faster. You don't have to type anything in the Search or use drop down menus. Nodes are instantly accessible through recognizable icons, which also have tooltips. The Node Bar is fully customizable. You can organize your favorite nodes into one or multiple rows and group them to your liking. You can also label your rows.

https://blendermarket.com/products/node-bar