Hilder Santos

Tired of link every Twitter profile cited in your posts and pages? Birdfy allows you to automagically transforms your @users and #hashtags markups in your posts/pages into links to Twitter profiles/hashtags search.
All you have to do is install this plugin, and you’re good to go.
Features
<ul>
<li>Automatically discovers @ and # content into your posts and pages (excluding e-mails, dots after usernames and so on);</li>
<li>You can disable users and/or hashtags discovery both globally or in individual posts/pages;</li>
<li>Optionally, you can choose to open the links in a new window/tab.</li>
</ul>
Usage
Simply install the plugin and start to cite Twitter profiles by using @ before the twitter username you want to link, and the plugin will transform it into a link to the profile. Same with hashtags, by simply use # before any word – like in Twitter.
If you want to fine tune the plugin, you still can go to the Options page, named “Birdy Settings” (inside the Settings menu) and enable/disable the options you want. Remember that this options will act globally.
You may want to disable @users/#hashtags links in individual posts/pages also. In this case, just disable what you want in the box created inside your post/page administration page.
<h3>Contact</h3>
Want to contact me? Just drop me your suggestion, bug, congratulations and so on at hilder[at]hildersantos.com, or contact me on my <a href="http://hildersantos.com/contato" title="Link to my contact page" rel="nofollow ugc">contact page</a>.

Birdfy – Twitter markups for WordPress

Birdfy is a plugin that allows you to use @users and #hashtags markups on your posts and pages, and to link them to Twitter.

Automattic

Daniel Bachhuber

Gary Jones

Mohammad Jangda

Assign multiple bylines to posts, pages, and custom post types via a search-as-you-type input box. Co-authored posts appear on a co-author’s archive page and in their feed. Co-authors may edit the posts they are associated with, and co-authors who are contributors may only edit posts if they have not been published (as is core behavior).
Add writers as bylines without creating WordPress user accounts. Simply <a href="https://github.com/Automattic/Co-Authors-Plus/wiki/Creating-and-editing-guest-authors" rel="nofollow ugc">create a guest author profile</a> for the writer and assign the byline as you normally would.
On the frontend, use the <a href="https://github.com/Automattic/Co-Authors-Plus/wiki/Template-tags" rel="nofollow ugc">Co-Authors Plus template tags</a> to list co-authors anywhere you’d normally list the author.
For more detailed documentation refer to <a href="https://github.com/Automattic/Co-Authors-Plus/wiki" rel="nofollow ugc">the GitHub Wiki for this plugin</a>.
Co-Authors Plus is an almost complete rewrite of the <a href="https://wordpress.org/plugins/co-authors/" rel="ugc">Co-Authors</a> plugin originally developed by Weston Ruter (2007). The original plugin was inspired by the ‘<a href="https://txfx.net/2005/08/16/new-plugin-multiple-authors/" rel="nofollow ugc">Multiple Authors</a>‘ plugin by Mark Jaquith (2005).

Co-Authors Plus

No support at all , also it doesn't work with wpml

No Support - Not compatible with WPML

Not working

Works!

I rarely ever give 1 star reviews, but developers who take over a plugin - making a breaking change that took a while to resolve - and then refuse to follow standard practice by providing a changelog (despite requests) for future updates, cannot be trusted.

Avoid at all costs.

Cannot trust developers

Assign multiple bylines to posts, pages, and custom post types with a search-as-you-type input box.

Birdfy – Twitter markups for WordPress vs Co-Authors Plus