Jetpack - Jetpack offers SEO and security plugins for Wordpress.
Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
WP User Manager - The most customizable profiles, community builder and membership WordPress plugin
XYplorer - File Manager for Windows
UpStream Plugin - UpStream Plugin is a free-to-use project management plugin that allows you to manage various types of projects right from your WordPress site.
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.