Theme Buffer

Hide Manager adds a simple sub menu under settings from where you can toggle the visibility of page & post title(s), post featured images on detail pages, and post & page comments.
You can select “ALL’ option to hide titles from all the posts or pages or you can add selected post’s and page’s id(s). To hide featured image on post detail page once can select all option or simply enter the post id of the selective blog post on which they want to hide the featured image. Similarly you can choose the setting to hide comments on Page and Post
<h3>Advantatges</h3>
We have used filters instead of hiding CSS, that gives you more control over the hide features regardless of the CSS or design of your website.
User can hide title, comment and featured images from a particular page or post using the id.
It does not affect the front end your website.

Hide Manager

Hide Manager helps you in hiding page/post titles, page/post comments, and blog post featured Image on detail page.

WPGurus

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.
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 hide the title you just have to use a checkbox on the post creation form. This checkbox is displayed in the form of a metabox for all post types.

Title Remover

Gives you the ability to hide the title of any post, page or custom post type item without affecting menus or titles in the admin area.

Hide Manager vs Title Remover