Best Resources
WordPress
Change your WordPress Salts: https://api.wordpress.org/secret-key/1.1/salt/
(Copy the code you see, and replace it in your site’s /wp-config.php)
WordPress management tool, manage several sites from one location: https://mainwp.com/
CSS
“Just add water” CSS animator: https://daneden.github.io/animate.css/
Magento
How to perform Magento database maintenance: https://docs.nexcess.net/article/how-to-perform-magento-database-maintenance.html
Issues with API Keys? Validate yours here: http://yougapi.com/tools/google-api-key-checker.php
DIFF Tool
This is my fave because not only can you compare code side by side by you can quickly and accurately edit http://www.mergely.com/editor
HTML
Quick and easy online editor when you need one https://html-online.com/editor/
Icon Maker
Need a standard icon? Want to change color and size? This is the easy tool for you. https://tablericons.com/