codigoed

Little Message Lite is a lightweight WordPress plugin that adds a floating button to your site. When clicked, it opens a compact contact form so visitors can send you a quick message via email — no page reloads required.
Messages are also stored in your WordPress database for easier access and backup.
Just set your email address, and you’re ready to go. Ideal for portfolios, simple sites, landing pages, or anyone who needs a fast and clean way to receive messages.
Includes optional reCAPTCHA v2 or v3 to prevent spam, plus customizable design and display options.
Upgrade to PRO to reply to messages from your WordPress admin, unlock advanced display rules, and add more contact methods like Telegram or Messenger.
<h3>Upgrade to PRO</h3>
Need more features? Upgrade to <a href="https://codigo-ed.com/plugin-mensajito/" rel="nofollow ugc">Little Message PRO</a> and unlock:
<ul>
<li>Reply to messages from the WordPress admin</li>
<li>Customize where and when the button appears</li>
<li>Add Telegram and Messenger contact options</li>
</ul>
<h3>License</h3>
This plugin is free software licensed under GPLv2 or later. 
You may modify, distribute, and use it commercially or personally. 
More info: https://www.gnu.org/licenses/gpl-2.0.html

Little Message Lite

Lightweight contact form with floating button, email alerts, anti-spam, and simple setup. Ideal for small sites.

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).

Little Message Lite vs EasyWeather widget