I use Excel to build templates, design business models, crunch numbers, and make projections. Once every three months I hold webinars where I teach my students how to use the high end features of high end chess database software. I have been teaching software applications for over twenty years, and spend 12 hours a day on the computer.
These tools are worth their weight in gold and besides my personal experience, now I will share my background, so you can trust my recommendation. I use them every single day, because hey are all filled with tools that are guaranteed to at least double your productivity, when you are working in either Word or Excel.
Ku Tools for Word, Ku Tools for Excel, and Office Tabs are the very best tools in my software library.
