Demo site

You can have a look at some of the Jetpack features here on www.ads-software.com:
https://www.ads-software.com/news/

The sharing buttons on this blog are added by Jetpack.

You could also check The Jetpack site to get more information about each one of the modules included in Jetpack:
https://jetpack.me/

Another alternative would be to install Jetpack on your own computer, by enabling the development mode. You can find out how to install WordPress on a local environment here:
https://codex.www.ads-software.com/Running_a_Development_Copy_of_WordPress