9hdigital

This plugin will allow users to chat with the website’s business in real-time by using Facebook Messenger. Users can start a conversation on the website and continue it on other devices at any time.
Please note, Facebook is still currently developing their Customer Chat and so it is still in beta.

WP Chat

Chat with business customers on your website using Facebook Messenger

weatherwizz

Using simple shortcodes provided by the WeatherWizz plugin you can now feed your WeatherWizz dashboard weather 
data directly into your wordpress site.
How to use?
Login to your WeatherWizz account and navigate to integration and select WordPress, from here you can create WordPress shortcuts to display on your webpages.
See examples below.
Today the temperature in my garden is {{wiz_abc00}}c
When the page is opened this will be displayed as: 
Today the temperature in my garden is 18.7c.
You can even configure your sensors to display in multiple formats on the same page.
See more examples here https://www.weatherwizz.com/

WeatherWizz

Puts your WeatherWizz dashboard data directly onto your wordpress website giving you control on how your data is displayed.

WP Chat vs WeatherWizz