DefProc

TweetUpdater will send a message to your Twitter account, from you WordPress installation, whenever a new post is published, or when a previously published 
post is updated; as you choose.
The tweet format is flexible, with placeholders for title and URL. URLs can be included from a variety of sources. In addition to full 
post permalinks (standard or friendly urls as selected in your site setup) the following short url services are supported:
Internal services:
<ul>
<li><a href="https://wordpress.org/extend/plugins/le-petite-url/" rel="ugc">la petite url</a> plugin</li>
<li>WordPress Permalink</li>
</ul>
Generic shorteners
<ul>
<li>YOURLS</li>
</ul>
External services:
<ul>
<li>Bit.ly</li>
<li>Stwnsh</li>
<li>TinyURL</li>
</ul>
Posts tweeting can be ommited based on post category, or custom field, or custom field and value pair.
Derived from the original TwitterUpdater, version 3 has been fully rewritten to include OAuth authorisation with Twitter; because basic 
authentication (username & password) has now been deactivated for applications using the Twitter API.
The TwitterUpdater plugin has a great tradition of being updated and improved by anyone who needed it to do something different, and 
as such TweetUpdater is one of a handful of TwitterUpdater forks.
If the short url service you like to use is not included, please see the FAQ on how to add it. If you add a service, let me know and 
I’ll add the code to the next release.
<ul>
<li>Support & Bug reports at <a href="http://github.com/DefProc/TweetUpdater/issues" rel="nofollow ugc">github.com/DefProc/TweetUpdater/issues</a></li>
</ul>

TweetUpdater

Send messages to Twitter when a post is published or updated; uses OAuth. Will add a short URL from a plugin, or from an external service.

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.

TweetUpdater vs Twitch Status