thatposhgirl

This is a simple plugin that prepends any category names to the front of the 
title when viewed from the front page. It does this in the form:
[Category Name] Post Title
The current version prepends any categories that are associated with the post.

Category Title Prefix

Prepends the category name to the post title when viewed on the front page.

amit5204

Important: This plugin works with every theme that uses the recommended WP function for displaying the title. For other themes, that display the title using a lesser know method, it might not work.
This plugin adds a simple metabox beside the post creation form in the WordPress admin interface, allowing you to toggle the visibility of the title. Unlike some of the other similar plugins available in the WordPress repository, it completely removes the title instead of just hiding with CSS or JavaScript.
This plugin also provides the global option to remove the title from all the posts. Just need to enable the post types from wordpress “Settings->Extended Title Remover” page.
Some advantages of using this plugin:
Does not affect menus or the admin area: Before removing the title it checks to make sure that the front-end is being displayed and the current point is within the loop. In other words it has no effect on menus or post tables in the admin area.
Works with all post types: To remove/hide the title you just have to use a checkbox on the post creation form or from the global settings page. This checkbox is displayed in the form of a metabox or as a optipon for all post types. 
Note :- This plugin is inspired from “Title Remover” plugin.

Extended Title Remover

Extended Title Remover gives you the ability to hide the title of any post, page or custom post type item without affecting menus or titles from the a …

Category Title Prefix vs Extended Title Remover