lautr

This Plugin implements an easy configurable Widget which can display your top Google search querys (Keywords) and link it to your internal search like a tag cloud by accessing an Google Analytics account. 
You can use its default font sizes or override them by the classes that are applied. It is recommended to have APC installed to cache the Google API requests but its not necessary. 
It is written and currently maintained by <a href="http://www.lautr.com" rel="nofollow ugc">Johannes Lauter</a> and uses the Google Analytics API PHP Class from <a href="http://www.electrictoolbox.com" rel="nofollow ugc">Chris Hope</a>.

WP Google Search Query Widget WordPress Plugin

Implements a Widget with your Top Google Search Querys

techphernalia

This plugin helps your SEO by adding meta keywords tag to each page, post, archive (category, tag, date, day and year). 
Now it also allows you to specify common keywords to be included on every web page. Plugin from one of the best coder <a href="https://www.techphernalia.com/" rel="nofollow ugc">Durgesh Chaudhary</a>. 
For any support just leave your question at our <a href="https://www.techphernalia.com/meta-keywords-generator/" rel="nofollow ugc">Meta Keywords Generator</a> page.
Uses Title, Description, Categories, tags, Compulsary keywords (provided by you in setting) for keywords generation. Uses content after striping short codes and short tags for generation of description.
Reduces manual work of adding them manually.
Now more efficient by allowing you to add one time master keyword list.
A big Thanks to Omer Barlas for suggesting to change text box to textarea for better readability.

Meta Keywords Generator

Adds Meta keywords and Description to each and every page, post, archive.

WP Google Search Query Widget WordPress Plugin vs Meta Keywords Generator