Steve

This plugin uses custom fields to allow the page title tag to be customised and differ from the actual page title.
Both meta descriptions and keywords can also be added if required.
Page meta details can be modified on any publicly accessible post type, such as posts and pages, as well as custom post types.
Theme and plugin developers should note that it is possible override the page title within your templates by setting <code>$wppm_title = 'Newly defined title';</code> before the call to <code>get_header();</code>.

Page Meta

Adds the ability to override the page meta title and add in meta descriptions and keywords for pages.

gguo01

ADR Promotion Recommendations is a simple plugin that displays promotion recommendations based on page content. Highly relevant promotions are displayed automatically right below your post content. You can also drop it to your sidebar as a widget.
To display promotions, you need to register your site and email contact. Please go to https://www.adrelevantis.com/wp/plugin-register.php for details.

ADR Promotion Recommendations

This plugin displays relevant promotion recommendations below post content and allows you add them in sidebar as a widget.

Page Meta vs ADR Promotion Recommendations