TIgor4eg

This plugin adds widget to dashboard with such information:
<ul>
<li>
Time wgen Yandex crawler last accessed your site
</li>
<li>
Does site have dangerous code
</li>
</ul>
All information is provided by <a href="http://webmaster.yandex.ru/" rel="nofollow ugc">Yandex Webmaster</a> and showed as is. You should be registred Yandex user and add your site in Yandex Webmaster Service.

Yandex Webmaster

This plugin shows information from Yandex Webmaster.

Rizonepress

<a href="https://www.rizonesoft.com" rel="nofollow ugc">ClaimIt</a> is a simple WordPress plugin to claim your website on Google, Bing, Yandex, Pinterest, Webutation and Web Of Trust (WOT).
Note that when using a CDN with your website, the meta tags could not update correctly. In this case, you should disable your CDN or flush the cache while you verify your website.
<h4>Features</h4>
<ul>
<li>Ads the required meta tags to verify your website on Google Webmaster Central.</li>
<li>Ads the required meta tags to verify your website on Bing Webmaster Center.</li>
<li>Ads the required meta tags to verify your website on Webutation.net.</li>
<li>Ads the required meta tags to verify your website on Web Of Trust (WOT).</li>
<li>Fetch as Google button for posts and pages.</li>
<li>Add custom html to the Header section.</li>
<li>Add custom html to the Footer section.</li>
<li>Add custom html after the tag.</li>
</ul>

ClaimIt Webmaster Tools

Simple plugin to claim your website on webmaster tools like in Google, Bing, Yandex, etc.

Yandex Webmaster vs ClaimIt Webmaster Tools