Here is a collection of best free WordPress slider plugins for 2016. The plugins listed here satisfy two most important conditions. They are regularly updated and provide good support via WordPress.org forums.
1. Slider WD
Slider WD is one of the fastest loading wordpress responsive slider plugin with various effects for your WordPress site. You can add unlimited slides, both images and videos (YouTube and Vimeo). There’s plenty of transition effects and also support for 3 layers: Textual content, Images and Sharing buttons (Twitter, Google+, Pinterest, Facebook & Tumblr).
2. Ultimate Responsive Image Slider
With multiple image uploader, you can add infinite number of image slides in a single slider. Images slider has various settings like customizable height and width, auto play slides, slide thumbnails, navigation buttons and many more.
3. Meta Slider
Meta Slider is the most popular WordPress slider plugins. With wordpress meta slider, you can simply select images from your WordPress Media Library, drag and drop them into place, set slide captions, links and SEO fields all from one page.
4. Cyclone Slider 2
Cyclone Slider 2 is an easy-to-use slider plugin with an intuitive user interface. It uses custom post for the slider, custom fields to store settings, and media uploader for the images.
5. Huge It Slider
Huge-IT Slider is a quick and easy way to add custom sliders to the WordPress websites (both to templates and posts/pages). The slider allows having unlimited amount of images with their titles and descriptions.
6. GIGA WordPress Slider Plugin
GIGA Slider is a quick and useful wordpress plugin to add a custom sliders to your WordPress based website posts or pages. This GIGA Slider support adding unlimited amount of slides for every slider with a title and description for each slide.
7. Smart Slider 2
Smart Slider 2 comes with an intuitive interface for backend, which makes easy for anyone to design beautiful sliders in minutes. Grab a new layer, move it on the canvas, finally drag&drop some items with your mouse and your slide is ready.
8. Master Slider
Master Slider is a free responsive image and content slider with super smooth hardware accelerated transitions. It supports touch navigation with pure swipe gesture that you have never experienced before.
9. Slider by SupSystic
Slider by Supsystic is a great way to create stunning image slider and video slider without programming skills. Fully responsive, work on any mobile device.
10. Avartan Slider Lite
Avartan Slider is a responsive WordPress slider that features text, image and video elements. It supports YouTube and Vimeo videos, but also many animations and layers.