Wp Favs - WordPress plugin manager for easy and bulk plugin installation
Yoast
Matomo Analytics - The Google Analytics alternative that protects your data
P2 — The New Working
WordPress
Scan WP | Wordpress Theme Detector | Plugin Detector | WP Detector
WordPress Plugin Checker finds plugins on WordPress sites
XCloner - Website Backup and Restore | Professional Backup application, Joomla backup extension, Wordpress backup plugin
Underscores | A Starter Theme for WordPress
What WordPress Theme Is That?
WordPress Theme Detector - Free online tool to find a site´s theme
Manage WordPress Sites from One Dashboard – ManageWP.com
Custom Wordpress Installer - Pick Plugins & Themes - Roll Your Own Zip!
Command line interface for WordPress | wp-cli
InfiniteWP - Manage Multiple WordPress Sites
Wordpress Theme Generator
WP Remote | Just another WordPress webapp