Category Post Count

Set how many posts are displayed per page for each view type — home, categories, tags, authors, archives, search, and custom post types.

Custom Posts Per Page provides a settings page in your WordPress admin that allows you to specify how many posts are displayed for different views.

Posts per page for custom post types and taxonomies.

Fine grained control of how many of your posts appear on each of the various WordPress archive pages.

Essential Widgets is a WordPress plugin for widgets that allows you to create and add amazing widgets with high customization option

Replaces the plain-text category and tag description editor with a visual editor.