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.

sspooky13

Plugin for show random live stream from Twitch by your selected game, streamers, and language. Show your random favorite streamer after every refresh. 
This plugin uses for work 3rd party service <a href="https://www.twitch.tv/" rel="nofollow ugc">Twitch.tv</a>. Using this plugin you accept <a href="https://www.twitch.tv/p/terms-of-service" rel="nofollow ugc">Terms of Service</a> and <a href="https://www.twitch.tv/p/legal/privacy-notice/" rel="nofollow ugc">Privacy Notice</a> of this service.
<h3>Usage</h3>
Simply use the following shortcode anywhere in a post or page within WordPress:
<pre><code>[getTwitchStream]
</code></pre>
If you want to change some CSS class, you can create your custom CSS class and use it this:
<pre><code>[getTwitchStream customcssclass="yourCustomClass"]
</code></pre>

Random Online Twitch Stream from selection

Plugin for show random live stream from Twitch by your selected game, streamers, and language. Show your random favorite streamer after every refresh.

Twitch Status vs Random Online Twitch Stream from selection