If your Appearance > Menus screen has become very laggy after upgrading to WordPress 3.6 and you have a lot of menu items, this should speed it up.
Speed up you site by creating additional database indexes.
Ultimate Metabox Tabs allows for keeping your post/page and ACF options user friendly for your client with the use of tabs.
Fully integrates media manager into editing interface, avoid reloading thickbox pop-up, with enhanced features like multi-insert & mass-editing.
Addicted to speed. Squeeze out a better Google ranking with no effort. Optimize image content for viewing by the end user.
Searches for and inserts illustrations to your post. Images are from ClipArtIllustration.com. Streamlined/animated jQuery interface helps you find you
WPSearch 2 is the missing site search for your WordPress installation. Install this plugin if you need a fast, relevant, google-like search.
It lets user adds Twitter, Facebook, ShareThis social media on pages. Build with various options like display order, automatic, manual mode.
This is the optional Plugin for your Blog for the corresponding iPhone App BlogIt.
The archives WordPress plugin. This plugin creates real posts archives and greatly reduces the DB load since old posts are called only when needed.
Dynamic Headers does just what you think it would based on the name - it allows you to create highly dynamic header space on your WordPress site.
Add images to your blog posts from a URL in a flash. Skip the download/upload steps and the slow WordPress dialog box.
Speed-up page updating, when using custom permalinks and a lot of pages.
Very fast plugin that cache shop's content for a quicker user experience. Easy and clever. Displays your eBay shop listings with all infos.
A highly optimized category list/tree widget for WordPress