Karrde

Includes a file’s contents in the widget. Quick and dirty, all this does is use the PHP include function to include the specified file in the widget. There is NO checking done whatsoever on the file, so use it at your own risk. I wrote this because I couldn’t find a widget to do this ? plugins exist for using include in posts and pages, but not in widgets.

Include Widget

Includes a file's contents in the widget.

tstafford

Adds a shortcode to include the content of a file or URL inside of a WordPress page or post.
Example:
Include the following in a page or post: 
[include_file url=http://example.org/somefile.txt]
This would include the content of http://example.org/somefile.txt into your page or post.

include-file

Adds a shortcode to include the content of a file or URL inside of a WordPress page or post.

Include Widget vs include-file