Judah Wright

The Simple Twitch.TV Widget is exactly what the name implies. It is a very 
straight-forward, easy to use, and configurable front-end widget generator. 
The entirety of what the widget does, is show if a user is online or not. If the 
user in question is online, it will give a preview of their stream and a link 
to their stream. If they are offline, it will simply place a placeholder image 
there.
<h3>Support</h3>
I will provide ZERO support for this plugin. This plugin is being provided 
as-is, with no custom work for anyone. You may use at your own risk. 
With that said, if you find bugs you may report them to 
“judah@thosetechguys.org”. I will do my best to solve any problems with my work.

Simple Twitch.TV Widget

This is a very simple and straightforward widget generator that shows a users
Twitch.TV online status.

Nicolas Bernier

Inserts Twitch.tv stream status tags in your blog. The tags just indicates if the stream is live with a blinking red cirle or offline.
Supports multiple channels.
Also implements a simple widget showing the stream status (including the thumbnail, title, game name and number of viewers) + CSS classes to show and hide some elements of the markup accordingly to the channel status.
The tags and the widget are updated every 30 seconds.

Twitch Status

Inserts Twitch.tv stream player and chatbox in your posts, stream widget and online status tags in your menus. Supports multiple channels.

Simple Twitch.TV Widget vs Twitch Status