SEO

Articles

• How to Conduct an SEO Audit of Your Website | Elegant Themes Blog

Applications

• Photos Exif Editor

Plugins

General

• Yoast SEO: The #1 WordPress SEO Plugin

Sitemap

• Page-list – Hierarchical tree of all pages on site
• WP Sitemap Page

Schema

• Header and Footer Scripts
  • for adding code/schema on a specific page 
• Header Footer Code Manager
  • for adding code/schema with conditional logic