Smart Sidebars Slider
Smart Sidebars Slider is a WordPress plugin that can add one or more extra sidebars (for widgets or any other content) that will be hidden behind the tab on left or right side of the screen. You can add one or more sidebars and control their visibility across different WordPress pages.
CONTENT FOR SIDEBARS AND BASIC FEATURES
These sidebars behave like standard sidebars, and you can add widgets into all new sidebars from standard WordPress Widgets panel. If you need it for some custom content, you can add any HTML/PHP content or use filters to add any content inside sidebar. You can set custom rules to control on which pages each sidebar will be shown, you have built in simple styler to create custom styles for sidebars, you can control open/close animation for sidebars and much more.