ruudkok

<p>With this plugin you can add the new Tweet button from Twitter to every post, and every page. The plugin is fully customizable:</p>
<ul>
<li>Choose where to display the button (top,bottom,left,right), up to 2 times each post/page</li>
<li>Choose when to display the button (posts, pages, both or everywhere)</li>
<li>Select the type of button you like (horizontal count, vertical count, or no count)</li>
<li>Set the margins between the Twitter Button and surrounding content</li>
<li>Select a twitter account (if any) which you want to be mentioned in each tweet (e.g. via @ruudkok)</li>
</ul>


WP Twitter Button

This plugin allows you to add the new Twitter button(s) to your blog. You can choose the type of button and set where to display the buttons.

the5kyliner

<p>Include secure share-buttons from the three biggest social-media-platforms: facebook, twitter and google+. The buttons don’t include any scripts, so no data is transmitted unless the user decides to click the button and actually share the content.</p>


TsBig3 Secure Share-Buttons

Include secure share-buttons from the three biggest social-media-platforms: facebook, twitter and google+.

WP Twitter Button vs TsBig3 Secure Share-Buttons