Microsoft Office has add-ins for every software in its suite. How do PowerPoint add-ins help your presentations? This is where our list of the best, mostly free PowerPoint add-ins come in. But though this Office software is packed with features, you need extra help sometimes. Microsoft PowerPoint gives you some help with time. In every case, a good presentation requires thought, hard work, and time. It can also be a visually breathtaking course of animations and graphics. Facebook Twitter LinkedIn WhatsApp Pocket EmailĪ PowerPoint presentation can be a simple deck of slides.