All skilled professionals have a "toolbox", right? An electrician might have a multimeter, screwdrivers, and a hammer. A painter might have brushes, pallets, paints. An engineer is no different, except that their toolbox is often entirely digital.
In all cases, tools help you to be more PRODUCTIVE, FASTER, and MORE ACCURATE in your every day work.
My developer toolbox is a set of customizations, tools, and applications that augment and improve the operating system and computer I use. I'll specifically cover changes and tools I use that help with developing computer software and websites.