Используются в проектах в основном по 4-5 штук максимум:
Raw HTML
Duplicator
Reveal IDs
Tab Override
Cyr to Lat enhanced
Custom Post Type UI
Custom Post Type Permalinks (taxonomy also)
Intuitive Custom Post Order
Advanced Custom Fields
Advanced Custom Fields: Repeater Field
Advanced Custom Fields: Options Page
Breadcrumb NavXT
Remove Category URL
TinyMCE Advanced
Easy FancyBox
Plugin Organizer
MinQueue
BJ Lazy Load
Device Theme Switcher
Contact Form 7
Contact Form 7 Redirect
Contact Form DB
TablePress
Easy Watermark
Regenerate Thumbnails
WP-PostViews
Infinite-Scroll
Hide-n-Disable-comment-url-field
Шорткоды
Откл. комментарии
Menu Icons
UpdraftPlus - Backup/Restore
WP Super Cache
WP-Polls
Yoast WordPress SEO и All in one Seo
Yet Another Related Posts Plugin