RT Slider

Developers: Integrate this Plugin with your themes.
Documentation here

RT Slider is a Very Simple and Easy to use Plugin. All this Plugin does is that, it adds a Panel to your WordPress Customizer, which helps you create a Slider. It works with only those themes, which support this plugin and does not work with every theme.

The Benefit of this Plugin, is that you don’t loose your Slider data once you switch from one theme to another. Here are a few themes which support this plugin.

Newp
Oxane
Madhat
Synapse

If you are a developer and have integrated this plugin with your theme, contact me.