Debashish

Author Spotlight widget displays the profile of the author(s) with Social links (example: Twitter, Facebook) and his/her profile picture or Gravatar on any post or page that has an Author. The widget automatically detects the current author(s) of the displayed post or page; just drag and drop the widget on your sidebar and you are done.
To display a custom photograph with the Author’s Profile you may install the <a href="https://wordpress.org/extend/plugins/user-photo/" title="User Photo WordPress plugin" rel="ugc">User Photo</a>. In absence of this plugin the widget will fall-back to displaying the Gravatar associated with the user. If your posts have multiple authors you may use the <a href="https://wordpress.org/extend/plugins/co-authors-plus/" title="Co-Authors Plus WordPress plugin" rel="ugc">Co-Authors Plus</a>, the Author Spotlight will then display all the author profiles one below another for such post/page.
Note that installing the User Photo or Co-Author plugin is purely optional, this widget will work fine without them as well.
If you face any issues with the plugin or have any suggestion/feature requests please do so <a href="https://wordpress.org/tags/author-profile" title="Author Spotlight plugin support forum" rel="ugc">at the support forum</a>.

Author Spotlight (Widget)

A Sidebar widget to display the Author(s) profile on any Page or Post along with Social web links.

Abhik

Advanced Author Bio automatically adds a short author bio box along with gravatar and social profile links in every single post of your blog. That isn’t all, it also:
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Enables the HTML formatting in author description field
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Adds Facebook profile field in author profile setup page
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Adds Google+ profile field in author profile setup page
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Adds Twitter profile field in author profile setup page
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Adds LinkedIn profile field in author profile setup page
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Adds Pinterest, YouTube, Flickr and StumbleUpon field in author profile setup page (Plugin Version 3.0 onwards)
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Shows the Social Profile link only if the field is populated. (Added on version 2.0, thanks to <a href="https://wordpress.org/extend/plugins/profile/viwickam" rel="ugc">viwickam</a>)
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Shows the Website if any Hompage URL is set at profile. (Added on version 2.0)
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Highly customizable author bio box (Needs the editing of supplied Stylesheet file).
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Shows the Author’s profile image from Gravatar depending on the author’s email.
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A must have plugin for Multi Author Blogs.
Here is a live demo on my <a href="http://www.itsabhik.com/advanced-author-bio-wordpress-plugin/" rel="nofollow ugc">Plugin Homepage</a>. If you are find my plugins useful, add me in your circles on <a href="https://plus.google.com/106671843900352433725?rel=author" rel="nofollow ugc">Google +</a>. Don’t forget to visit my blog <a href="http://www.itsabhik.com" rel="nofollow ugc">ItsAbhikDotCom</a>.

Advanced Author Bio

Adds a short author bio after every single post on your blog. Also, enables HTML formatting tags in author description and adds Facebook, Twitter, Goo …

Author Spotlight (Widget) vs Advanced Author Bio