DanCoulter

Once this plugin is activated, you’ll be able to use the new “shortcodes” 
in your sidebar text widget. The shortcodes will work exactly the same 
way as they do in your posts.

Sidebar Shortcodes

Allows shortcodes to be used in the sidebar text widget.

Pankaj Anupam

Shortcodes in Sidebar plugin allow shortcodes to execute when used in sidebar text widgets. All that is needed is to download, install and activate. This is very useful for placing things like contact forms and other shortcode enabled features in sidebars.

Shortcodes in Sidebar

Upload, Activate - refresh page and shortcode is running, it worked right away. Thanks for that. 

Sweet

Shortcodes in Sidebar allows shortcodes to execute in sidebars.

Sidebar Shortcodes vs Shortcodes in Sidebar