Yoast SEO is the more common of the two in our index: it runs on 4,525 websites against 8 for WP Job Openings, and 6 sites use both. Counts come from real scans, not vendor claims.
WP Job Openings is a job listing and recruitment plugin for WordPress websites.
Yoast SEO is a search engine optimisation plugin for WordPress and other platforms.
6 sites run both WP Job Openings and Yoast SEO. That is 75% of the sites using WP Job Openings, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.