Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
WP Rocket - WP Rocket offers a caching plugin for Wordpress.
VOGSY - Professional service automation tool built on Google G Suite
Yoast - Yoast offers plugins to improve SEO and optimize web sites and blogs.
Office Timesheets - Professional Services Automation
Wordfence - Comprehensive security plugin for WordPress.