olivierognn

With this plugin you can use the shortcode [twitter-author] to add a nice preview of the author’s twitter profile in your post. The only requirement is that the author has indicated his twitter nickname in the user management page of WordPress.

twitter-Author-follow

This plugin helps you to show the author twitter profile in your posts using the shortcode [twitter-author]

zackproser

The Simple Twitter Follow Me button allows you to add a small or large Twitter follow button to the end of every post so you can grow your Twitter following with your blog readers and let your audience easily share your content on social networks.
Once installed and activated, go to Settings -> Reading and scroll down to the Simple Twitter Follow Button settings.
Here you can enter your Twitter username and choose whether the button should be small or large.

Simple Twitter Follow Me Button

This plugin is the easiest way to add an official Twitter follow button at the end of every post so your readers can follow you on Twitter.

twitter-Author-follow vs Simple Twitter Follow Me Button