bbPress is forum software with a twist from the creators of WordPress
Provides unofficial fixes for selected WordPress bugs, so you don’t have to wait for the next WordPress core release.
SEO Smart Links provides automatic SEO benefits for your site in addition to custom keyword lists, nofollow and much more.
Manages your WordPress database.
Controls almost every aspect of your site’s meta-data, including advanced tagging, Analytics, and dozens of plugins. The best WordPress SEO solution.
A very fast caching engine for WordPress that produces static html files
Optimizes your WordPress blog for Search Engines (Search Engine Optimization)