We like and use the following resources.
Theme
Betheme
Security
iThemes Security
Backup
BackWpUp
Editor
WPBakery Page Builder
TinyMCE Advanced
E-Commerce
WooCommerce
SEO
Yoast SEO
Forms
Gravity Forms
SSL
Really Simple SSL
Caching
WP Fastest Cache
Storage
AWS S3
Hosting
Atlantic.net
Domain Registration
GoDaddy