Zen2Seo

This plugin enables tracking spiders and bots via Google analytics without harc-coding your template files. Tracking bots and spiders on your website can help you understanding if all pages are visited by search engines or some of them have crawling problems. It is also useful to conduct SEO tests, if have not access to your server logs.
In order to make this plugin work, you need 2 thing:
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A new profile within your Google Analytics account. Select a “Add a Profile for a new domain”. Name it as you like (I suggest bots.mydomain.com). Take note of the Web Property ID (UA-XXXXXX-YY).
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The Google identifier of your domain, that’s the value of your _utma cookie on your website. Yo find this, use Mozilla Firefox (Tools>> Options>>> Show Cookies). Find your site, expand and look for the cookie named “_utma” (look at the first screenshot).
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Once you have this informations, you can install and activate the plugin.
For more information visit: <a href="http://www.giuseppepastore.com/en/portfolio/wp-bots-analytics-plugin/" title="SEO plugin" rel="nofollow ugc">WP Bots Analytics Plugin on Giuseppe Pastore’s site</a>

WP Bots Analytics

Enables tracking bots via google analytics on all pages.

bettoadami

A Multisite Network plugin that removes the automatic sitemap link (deprecated practice) and adds custom parameters/lines at the end of the default Robots.txt whenever called. It will enable small adjustments for each site on the network – like pointing again to specific sitemaps if needed – without sacrificing the default conventions coded to WordPress’ core. To make the adjustments, look for a text area at the end of General Settings Page.

Robots.txt Extender

Dynamic robots.txt for Multisite! Change parameters, or don't, for each site of your network without losing the defaults from WordPress Includes.

WP Bots Analytics vs Robots.txt Extender