websitedons

Add a copyright widget to the website footer. The widget will display the current year and the sitename. Can add a start year to show as “Copyright 2010 – 2014 Smiths Grocery”
Also the ability to add plain text or HTML before and after the copyright. If your system supports shortcodes in widgets, you can add shortcodes to display anything.
<h4>Links</h4>
<ul>
<li><a href="http://cmsenergizer.com/wordpress-plugins/viewdownload/5-wordpress-plugins/51-wordpress-copyright-footer-widget" rel="nofollow ugc">Plugin’s web page</a></li>
<li><a href="http://cmsenergizer.com/wordpress-plugins/viewdownload/5-wordpress-plugins/51-wordpress-copyright-footer-widget" rel="nofollow ugc">Support forum</a></li>
</ul>

CMSE Copyright Footer

Add A Copyright Footer With Current Year And Sitename

funfunkan

It is a plug-in that automatically creates copyright notation on the website. 
When the New Year comes, you can change the copyright renewal year automatically and display it.
The set copyright notation is pasted to the site theme footer etc. with a short code.
Webサイトに著作権表記を自動で作成してくれるプラグインです。 
新年が来たら自動で著作権更新年を変更して表示できます。
設定した著作権表記はショートコードでサイトテーマフッターなどに貼り付けるだけです。

stfCopyright

著作権ジェネレータープラグイン（Copyrights generator plugin）

CMSE Copyright Footer vs stfCopyright