TrueFalse

This plugin adds a drop-down list with the ability to sort your blog posts: 
* sort by title; 
* sort by date (newest first); 
* sort by date (oldest first); 
* sort by date last modified.
Paste the following code in the templates ‘index.php’, ‘archive.php’, ‘category.php’ or/and ‘author.php’ etc.:
This tag must be before The Loop. For more information go to the “Installation”.

WP Sort Posts

Add the ability to sort the posts in the archives of your blog!

tierrainnovation

Smart Category Ordering is a plugin that allows you to sort your post content (per category). You can apply your sorting to a single category, or have your settings follow a category tree, covering the parent and children categories.
When sorting by “Smart Title”, that option is there to the leading ‘a’, ‘an’ or ‘the’ from a post title when sorting. This is the only difference between “Smart Title” and “Title.”

Smart Category Ordering

Allows you to alphabetize categories by post title, by trimming leading text, by post date.

WP Sort Posts vs Smart Category Ordering