gaxx

Automatically adds keywords and description meta tag on every page based on title, tags, categories, etc.
It works on the basis of defining some simple, tag-based rules for different page types (home, category, post etc).
Built on the foundations of the excellent Automated Keywords Generator by Julian Widya Perdana (http://mr.hokya.com/automated-keywords-generator)

Gaxx Keywords

Automatically adds keywords and description meta tag on every page based on rules that draw information from title, tags, categories etc

Anton Kuliashou

Simple SEO by falbar adds basic meta data on the page (title, description, keywords). For WooCommerce you will need to install <a href="https://wordpress.org/plugins/simple-seo-woo-by-falbar/" rel="ugc">Simple SEO Woo by falbar</a>.

Simple SEO by falbar

This plugin extends the standard SEO WordPress features.

Gaxx Keywords vs Simple SEO by falbar