Topher

Provides a user interface under the Reading Settings page for choosing what post element to orderby. Also allows the site owner to chose ASCending or DESCending.
NOTE: Does not allow for arbitrary ordering via drag and drop. This is a simple setting.
<h3>Usage</h3>
Once it’s installed, go to Settings -> Reading section, scroll to the bottom, and choose an orderby and order option.

Default Post Sort

I'm glad I came across this plugin. It does exactly what the title says and nothing more which is what I want in a plugin. 

Simple and straightforward. Great plugin.

Provides a user interface for setting a default post order.

themorshed

Random AND Popular Post plugin allows you to show Your Random posts and Popular Posts in your widgetized area.
You can display posts in widgetized area as much as you want. Also this is very lightweight plugin. It can’t complict with another plugin because this plugin is developd using OOP which is most secure way to develop a good plugin. So, You can install this plugin without any hasitation and enjoy with us.

Random AND Popular Post

This is a Lightweight WordPress plugin to Display Random posts, popular posts etc.

Default Post Sort vs Random AND Popular Post