2 Best Free Slideshow Maker App for Mac.Best Free Slideshow Maker for Windows (4 Recommended).Also, most of these apps run on any computer, so you do not necessarily need to have a high-end machine. These slideshow maker apps have been carefully selected to ensure you can use them to make some nice slideshows without any hassle. In the following post, we cover some of the best tools to help you make a slideshow. There are many best free slideshow makers in the market to help you easily and efficiently create these slideshows on your devices. It is a combination of your photos, effects, and some music stored in a video format to let you play your photos one after another. If you love taking photos, you probably know what a slideshow is.