Node Tabber is a Houdini/Nuke style node adding tool for Blender's Node tree graphs; namely the Shader, Compositing and Texture graphs.

Instead of having to press SHIFT+A and then scrolling the sub menus to fins the correct node, or even clicking on the search menu and maybe getting the correct node; you can just press the TAB button which will bring up an intelligent search list which even supports node acronyms. For example, typing SX would bring up the Seperate XYZ node. This saves a lot of time when working with large node trees.

Head over to releases and download the zip file, but do not unzip it, just save it somewhere local.In blender preferences, go to the addon section and select "install ...", locate the downloaded zip and it will appear under the addons. Just enable it and change any preferences you wish.