isaacwedin

This plugin automatically creates a title for posts that do not have one. If the post contains text, the title is set to the first few characters of the post. For posts without any text content, the title is set to a configurable untitled post string.
<h3>Credits</h3>
This plugin is based on ideas from the Prologue theme and Luke’s Default Post Title plugin.

Titlematic

Automatically generates a title for posts without a title.

Bill Erickson

This plugin ONLY works with the Genesis theme. Do not install if you are not using Genesis.
This plugin lets you easily remove the page title from specific pages. Don’t want “Home” at the top of your homepage? Activate, then edit the homepage and check “Hide”.
You can also set sitewide defaults. If you don’t want page titles on any pages, go to Appearance > Customize > Theme Settings > Title Toggle and check the appropriate box. Once a post type has the default set to remove, when editing a page you can selectively turn on that page’s title.
See <a href="https://github.com/billerickson/genesis-title-toggle/wiki" rel="nofollow ugc">the wiki</a> for information on extending the plugin: 
– <a href="https://github.com/billerickson/genesis-title-toggle/wiki#use-on-posts-or-custom-post-types" rel="nofollow ugc">Use on Posts or Custom Post Types</a> 
– <a href="https://github.com/billerickson/Genesis-Title-Toggle/wiki#integrating-with-a-custom-theme" rel="nofollow ugc">Integrate with Custom Theme</a>

Genesis Title Toggle

This plugin ONLY works with the Genesis theme. Do not install if you are not using Genesis. Turn on/off page titles on a per page basis, and set site …

Titlematic vs Genesis Title Toggle