Themes

‘X’ Theme or ‘Pro’ Theme
Themeco
https://theme.co/x/
US$55

Divi
Elegant Themes
https://www.elegantthemes.com/
US$89

General

Jetpack
https://jetpack.com/
US$39/99/299/year
– Themes
– Backups
– Monitoring

Canonical

Yoast SEO
Free/US$89/year

https://wordpress.org/plugins/tags/canonical/

Forms

Contact Form 7
https://contactform7.com/
Free
Comes with X Theme

Gravity Forms
http://www.gravityforms.com/
US$39

Ninja Forms
https://ninjaforms.com/
US$99 (Personal)

Security

WordFence
https://www.wordfence.com/
Free or US$99/year

Favicon

Built-in with WordPress

Favicon by RealFaviconGenerator
https://wordpress.org/plugins/favicon-by-realfavicongenerator/
Free

Schema, Rich Snippets & Social Sharing

Schema.org
Twitter Cards
Open Graph Protocol
Microformats

https://wordpress.org/plugins/schema/
https://wordpress.org/plugins/all-in-one-schemaorg-rich-snippets/

Social Sharing
http://www.wpbeginner.com/plugins/best-social-media-plugins-for-wordpress/
https://wordpress.org/plugins/ultimate-social-media-icons/
https://wordpress.org/plugins/ultimate-social-media-plus/

Google Maps

e-Commerce

http://www.wpbeginner.com/plugins/best-wordpress-ecommerce-plugins-compared/

WooCommerce
Free

Galleries, Sliders and Carousels

Envira Gallery (with X theme)
http://enviragallery.com/
UD$29 (Basic)

Soliloquy (with X theme)
http://soliloquywp.com/
UD$19 (Personal)

Spam and Comments

(TBC)

Backups, DR, & Monitoring

VaultPress (with JetPack)

BackupBuddy
https://ithemes.com/purchase/backupbuddy/
US$80/year

Uptime

Site Usage, Analytics, and Mapping

Sitemap
SEO plug-ins

Google XML Sitemaps
https://en-au.wordpress.org/plugins/google-sitemap-generator/

Google Sitemap by BestWebSoft
https://wordpress.org/plugins/google-sitemap-plugin/

Google Analytics
X Theme

MonsterInsights [for full dashboard]
https://wordpress.org/plugins/google-analytics-for-wordpress/
US$39/year

Robots.txt
(TBC)

Meta and keyword tags (per page)
Yoast SEO

SEO

Yoast SEO
https://en-au.wordpress.org/plugins/wordpress-seo/
Free or US$89/year

All in One SEO Pack
https://wordpress.org/plugins/all-in-one-seo-pack/
US$136/year

SSL

Migrate or Change website domain
https://wordpress.org/plugins/tags/migrate/
https://wordpress.org/plugins/duplicator/
https://wordpress.org/plugins/all-in-one-wp-migration/

Email and Contact Lists

MailChimp
https://mailchimp.com/

https://mc4wp.com/ (MailChimp plug-in)

Membership & Subscription

https://wordpress.org/plugins/wp-members/
Untested

WordPress Themes & Plugins