Duplicate Page by mndpsingh287
Use this to copy a page or post.
WP Remote by maekit
Use this to manage updates for multiple wordpress websites
Minimal Coming Soon & Maintenance Mode by WebFactory
Customisable Splash pages for maintenance mode
Updraft Plus
For backing up your website files remotely
Yoast by Team Yoast
Handy tools to improve your WordPress SEO
Google Analytics Dashboard for WP (GADWP) by Exact Metrics
Redirection by John Godley
Clean-Up Tools
Add From Server by Dion Hulse
Media Cleaner by Jordy Meow
DNUI by
WP-Optimize cleans out post revisions, optimises database tables etc.
WP-Sweep also cleans out database
Security
WP Hide Login by WPServeur, NicolasKulka, tabrisrp