Shellbot

Posts by Category lets you display a list of posts pulled from a particular category or tag, and optionally 
group them by year, month or first letter of the post title.
Current features include:
<ul>
<li>Set a title to be displayed above list of posts</li>
<li>Shortcode allows post list to be inserted anywhere</li>
<li>Limit how many posts should be displayed</li>
<li>Group posts by year, month or first letter</li>
</ul>
Usage
To display the list of posts, add the following shortcode to your post or page.
Default settings:
<pre><code>[sb_category_posts]
</code></pre>
Custom settings:
<pre><code>[sb_category_posts show="10" cat="3" group_by="year"]
</code></pre>
For full list of parameters see <a href="http://codebyshellbot.com/wordpress-plugins/posts-by-category/" title="Posts by Category" rel="nofollow ugc">the plugin release page</a>

Posts by Category

Display a list of posts from a specific category or tag.

broadstreet

This is the easiest way to place ads in your WordPress site. Just drag a widget 
to the sidebar, upload, an ad, and save.
Watch a short video demo: <a href="https://youtu.be/E9CC3ZWOaLU" rel="nofollow ugc">https://youtu.be/E9CC3ZWOaLU</a>
Note: If you have an adblocker installed, it will prevent this widget (and parts of WordPress) from working properly.
<ul>
<li>Extremely intuitive for beginners</li>
<li>No clunky ad management interface</li>
<li>Easily place image banner ads</li>
<li>Easily place Google ad tags and other ad code</li>
</ul>
If you like Ad Widget and you’re selling ads, you might like our new <a href="http://broadstreetads.com/ad-platform/ad-formats/" rel="nofollow ugc">ad formats for publishers 
and salespeople</a>.
You will not find an easier way to run ads on your website!
<h3>Demo</h3>
Watch a short video demo: <a href="https://youtu.be/E9CC3ZWOaLU" rel="nofollow ugc">https://youtu.be/E9CC3ZWOaLU</a>
<h3>Troubleshooting</h3>
The Ad Widget is a very simple plugin. If you are having trouble 
loading ads on your site, please make sure that:
<ul>
<li>You do not have an ad blocker installed (you would be amazed how often this happens). Disable it and refresh the page a few times to see if the ad appears.</li>
<li>You don’t have CSS in your theme which is hiding images (rare, but it happens)</li>
</ul>
If you have any other trouble, email kenny@broadstreetads.com – try to avoid 
the WordPress support forums because they’re awful.

Ad Widget for WordPress

Easily upload ad images and ad code to your sidebar. For those that don't need or want a complicated ad management system.

Posts by Category vs Ad Widget for WordPress