Mitch

The most lightweight WordPress solution for quick maintenances. This plugin adds a maintenance option to your settings menu.
Features:
<ul>
<li>The admin bar maintenance button will become red to indicate that you have maintenance mode enabled so you’ll never forget to turn it off</li>
<li>Customize your own page – after that, you will be able to set it as your maintenance page</li>
<li>Administrators will still have access to the front-end of the website while the website is under maintenance</li>
<li>Lightweight, healthy code and very compact: that’s what makes this plugin so awesome!</li>
<li>Auto Disable (optional); Automatically turn off maintenance mode at the chosen date: you can also put the <code>easy-maintenance</code> shortcode in one of your pages to display the Auto Disable date to your visitors</li>
<li>Support for Genesis Framework and Contact Form 7: You are able to add a contact form to your maintenance page</li>
<li>This plugin will automatically use the style of your theme</li>
</ul>
No premium versions, no advertisements or hidden credits. This plugin will always stay lightweight and there won’t be any unnecessary code and/or features added.
I appreciate your review!

Easy Maintenance

The most lightweight WordPress solution for quick maintenances.

myselfko

Simple and lightweight widget for displaying weather data and forecast from Weather Underground (www.wunderground.com).
Plugin saves a local copy of data for faster and more optimal running. 
You need a Wunderground API key, which you can get here http://www.wunderground.com/weather/api/.
Features:
<li>simple and lightweight</li>
<li>multilanguage (currently supported: english, german, italian, slovene)</li>
<li>easy for translating</li>
<li>metric and imperial units</li>
<li>user can define own refreshing interval in minutes</li>
<li>no need for own weather icons, plugin automatically download them from Wunderground</li>

EasyWeather widget

Simple and lightweight widget for displaying weather data and forecast from Weather Underground (www.wunderground.com).

Easy Maintenance vs EasyWeather widget