51. White Label CMS
Version: 1.5.1 Allows complete customization of dashboard panels and logos, removal of menus, giving editors access to widgets and menus plus lots more. http://wordpress.org/extend/plugins/white-label-cms/
Fully integrates media manager into editing interface, avoid reloading thickbox pop-up, with enhanced features like multi-insert & mass-editing. http://wordpress.org/extend/plugins/faster-image-insert/
WordPress user management plugin. Custom user profile,registration with extra fields. Custom Login, Import users from csv and many more. http://wordpress.org/extend/plugins/user-meta/
Keep your valuable WordPress website, its media and database backed up to Dropbox in minutes with this sleek, easy to use plugin. http://wordpress.org/extend/plugins/wordpress-backup-to-dropbox/
55. Easy Digital Downloads
Sell digital downloads through WordPress with this complete digital downloads management plugin. Integrates with Paypal and many others. http://wordpress.org/extend/plugins/easy-digital-downloads/
Creates a widget, which allows you to add drop down mega menus from any WordPress custom menu using jQuery. http://wordpress.org/extend/plugins/jquery-mega-menu/
57. Dave’s WordPress Live Search
Adds “live search” functionality to your WordPress site. Uses the built-in search and jQuery.
58. Usernoise Feedback / Contact Form
Modal contact / feedback form designed “the Apple way”. http://wordpress.org/extend/plugins/usernoise/
Update URLs is a quick and easy solution to fix old URLs and links in content, custom fields, meta boxes and excerpts. http://wordpress.org/extend/plugins/velvet-blues-update-urls/
Dashboard plugin update notification, update all plugins at once, move your plugins from one blog to another with plugin install. http://wordpress.org/extend/plugins/plugin-central/
Cool Video Gallery is a Video Gallery plugin for WordPress with option to upload videos, add Youtube videos and manage them in multiple galleries. http://wordpress.org/extend/plugins/cool-video-gallery/
Easy management of 125×125 ads on your blog. Ads can be run for a specified number of days, and will automatically be taken down. Track clicks too. http://wordpress.org/extend/plugins/wp125/
Floating Menu creates a sticky, floating menu widget from any WordPress custom menu using jQuery.
Displays gorgeous YouTube and Vimeo videos and galleries in your site. Please visit tubepress.org for more info! http://wordpress.org/extend/plugins/tubepress/
ManageWP Worker plugin allows you to remotely manage your WordPress sites from one dashboard.
Enables visitors to make colored-highlights on your webpage & EASILY save/share their highlights Facebook, Twitter… 100+ such sites! http://wordpress.org/extend/plugins/instant-web-highlighter/
Embeds a Google Map into your site and lets you add map markers with custom icons and information windows. http://wordpress.org/extend/plugins/basic-google-maps-placemarks/
Summary statistics of blog. http://wordpress.org/extend/plugins/wp-statistics/
Display awesome Announcements, Welcome notes, Greetings, Events, News etc with attractive style, colors, themes and position it anywhere in the page. http://wordpress.org/extend/plugins/announcer/
71. WP-CopyProtect [Protect Your Blog Posts]
Protect your blog content from getting copied. A simple plug-in developed to stop the Copy cats.
Thank Me Later (TML) will automatically send an e-mail to your those who leave a comment at your blog.
Wp-Insert is the most powerful yet easiest to use WordPress ad management plugin which does a lot more than ad management. http://wordpress.org/extend/plugins/wp-insert/
Scissors Continued enhances WordPress’ handling of images by introducing cropping, resizing, rotating, and watermarking functionality. http://wordpress.org/extend/plugins/scissors-continued/
Provides an easy way to highlight important content on your posts and pages inside a box with a drop shadow. http://wordpress.org/extend/plugins/drop-shadow-boxes/