wolf

This plugin shows a social sharing menu on every post. You can change the design, animation, size of the icons or you can add your own social site.
Menu Text- you can add or remove text that will show below the menu
Icon Placement- change the location of the icons. You can have them at the top of the post, at the bottom or you can have them show up when you scroll down. 
You can change the background color of the menu and change the text color of menu text, but only when scroll option is enabled
Icon visibility- Which icons should be visible you can either have them all show up or only those you want.
Custom icons- you can add your own social site if the ones predefined are not enough for you, but you can only add tree custom icons
Icons size- change icon size from 20px to 70px.
Icon design- There are 7 different icon designs available.
Icon animation- There are 2 animations. Zoom zooms in the icons and Rotate rotates the icons on hover.
Preview shows the design, animation and size you chose in the settings. It updates once you save the settings.
Icons were made by Freepepik.

Menuio

social sharing menu on every post with changeable design, size etc. Share posts to social sites.

Automattic

John Godley

Donncha O Caoimh (a11n)

Eoin Gallagher

Lenny

Future upgrades to Sharedaddy plugin will only be available in <a href="http://jetpack.me/" rel="nofollow ugc">Jetpack</a>.
Jetpack connects your blog to the WordPress.com cloud, <a href="http://jetpack.me/support/" rel="nofollow ugc">enabling awesome features</a>.

Sharedaddy

Future upgrades to Sharedaddy plugin will only be available in Jetpack.

Menuio vs Sharedaddy