Here are the most downloaded Wordpress plugins. These most popular Wordpress plugins are downloaded a lot simply because they are very useful, easy to setup and use.
WP Environment Label - shows label with current server/environment name defined by config or admin-panel.
An easy to use, slick and flexible news ticker in the style of the BBC News page ticker
Add a dynamic "Login" or "Logout" menu item to any WordPress Menu and control redirects.
This plugin adds necessary code to make Wordpress SEO by Yoast compatible with BBPress.
Search Everything increases WordPress' default search functionality in three easy steps.
Quick Search And Only One Category Posting support quickly selecting category via search box when there are many categories.