how we can use plugins in Umbraco? is there any demo available ? and where I can find plugins ?

Yes, you can! Plugins are called Packages in Umbraco - they can be found here: https://our.umbraco.com/packages Could I please get you to use #882984410432012360 (for Umbraco 9+ related questions) or #882968040709427220 (for v6,7,8 related questions) in the future? The #869656431308189749 channel is only for socializing! 👍

Thanks