In the past few years, we have covered plenty of fancy, paid slider plugins for WordPress. Thumbnail Carousel Slider is a free slider that lets you display any number of images on your site as a responsive slider. It is highly customizable, so you can set speed and number of visible images in your slider.
You can add any number of images to your slider and edit image names. Admins can display arrow left/right on their slider. The pro version has even more advanced features. For instance, you can display images with captions or display images randomly.
This plugin gives you a simple shortcode for each slider that lets you easily display it on your website.