SEOPress is a powerful SEO plugin that has built-in integration with Oxygen. SEOpress have a content analysis feature just like yoast where you can se how effectivly you have optimized for your keyword. You can use SEOpress to boost your traffic, improve social sharing images and text, build custom HTML and XML Sitemaps, create optimized breadcrumbs, add schemas / Google Structured data types, manage redirections 301 and much more. Check it out. They have a free version and a paid version for $35 for unlimited sites.