CrestaProject

FREE Crest Posts Widget is a simple but powerful WordPress Widget which displays your posts with thumbnail and many other options like the ability to show the date, the number of comments, to change the length of the excerpt, change the size of thumbnails and much more.
Some features:
<ul>
<li>Easy to use interface</li>
<li>Change post title heading tag</li>
<li>Display the date</li>
<li>Display the comments count</li>
<li>Choose thumbnail size</li>
<li>Choose excerpt lenght</li>
<li>Order posts by date, title, comment count and random</li>
<li>Filter posts by category</li>
</ul>

Plugin Homepage 
http://crestaproject.com/downloads/cresta-post-widget/

Cresta Post Widget FREE

Widget for show all posts or filter by category. Many options available including show thumbnail, excerpt, date and comments count.

Ipstenu (Mika Epstein)

This plugin adds a new, sortable, column to the users lists, which shows the date and time they registered.
Primarily useful for single site (which doesn’t show this at all), on Multisite Networks it adds the user’s registration info for all individual sites.
<ul>
<li><a href="https://ko-fi.com/A236CEN/" rel="nofollow ugc">Donate</a></li>
<li><a href="http://halfelf.org/plugins/recently-registered/" rel="nofollow ugc">Plugin Site</a></li>
</ul>
<h3>Privacy Notes</h3>
This plugin does not track any additional data other than what WordPress natively collects upon registration. It just makes the data visble.

Recently Registered

Does what it says! It add new column in the user's dashboard!
You can also sort the users by registered date and that is very usefull

Useful. Works great, as I want

Add a sortable column to the users list to show registration date.

Cresta Post Widget FREE vs Recently Registered