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.

Nowell VanHoesen

This widget will get a list of post/cpt title first character. The list is then displayed as an unordered list of links. The links take the user to an archive page for the specific post type and display the posts where its title begins with the character.
If the title begins with the following words, the first character of the second word will be used:
<ul>
<li>A</li>
<li>An</li>
<li>And</li>
<li>The</li>
</ul>
Examples
<ul>
<li>‘A Cup of Joe’ will be listed under ‘C’</li>
<li>‘The Pony’ will be listed under ‘P’</li>
<li>‘Android Green is Nice’ will be listed under ‘A’</li>
<li>‘The 10 Strangest Foods’ will be places under ‘#’ (number sign)</li>
</ul>

A-2-Z Alphabetical Archive Links

Create and display a list of first characters for post/cpt titles which link to an archive of the posts/cpts that begin with that character.

Category Title Prefix vs A-2-Z Alphabetical Archive Links