David Walsh

This plugin allows WordPres admins to prevent posts in a given category from displaying on the homepage / main loop as well as the RSS feed.
Two new checkbox will display on the “Add New Category” and “Edit Category” screens — it’s that simple!

Remove Posts in Category From Homepage

This plugin allows WordPres admins to prevent posts in a given category from displaying on the homepage / main loop as well as the RSS feed.

ReflectionMedia

This plugin allows sorting of posts alphabetically, by Post Title (ascending or descending) or Post Date (ascending or descending), customizable for each category.

WP Post Sorting

This plugin allows sorting of posts alphabetically, customizable for each category.

Remove Posts in Category From Homepage vs WP Post Sorting