As the name suggests the Post-Page-Associator enables you to attach posts to a page. You can select a set of posts by category, tag, author or you just select some posts explicitly. You can find the free version in the WordPress Repository. There is no free version of this plugin available anymore.

Please feel free to switch to the Pro version.

There is also a Pro Version of the plugin available which supports custom taxonomies, post types and pagination: Associated Posts Pro.