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.

Jatinder Pal Singh

This plugin generates POST Title from POST content automatically. Sometimes, you forget to write the title or sometimes you don’t want to write the title. It will generate the title for you. Or you can select a statement from your post content to be a title for the post using shortcodes [agt][/agt].
How does it work? 
If you leave the title field empty, only then this plugin will work. 
There are two different ways, this plugin works: – 
* Firstly it will search the content to check whether you have used [agt][/agt]shortcode or not. If used, it will make the wrapped line as title. 
* If you haven’t used shortcode in your post, it will automatically pick first 30 characters from the post and will use them as post title.
Currently this plugin is tested with latest wordpress version 4.1, but it should work with other versions also.

Auto Generate Title

Want to save time. Do not want to write TITLE manually. This plugin is for you. No need to write the title. It will generate Post Title from your Post …

Category Title Prefix vs Auto Generate Title