WP to Twitter
Read more about WP to TwitterAuto-posts to Twitter when you update your website or blog, with your chosen URL shortening service
NextGEN Gallery
Read more about NextGEN GalleryDownloaded over 6 million times this is one of the most popular WordPress gallery plugins.
Yakadanda Google+ Hangout Events
Read more about Yakadanda Google+ Hangout EventsGenerate linked Google+ Hangout Event notifications in a widget with a countdown clock to each event.
Next Page, Not Next Post
Read more about Next Page, Not Next PostNext Page, Not Next Post is a very simple plugin that creates navigation between sibling pages.
Meteor Slides
Read more about Meteor SlidesEasily create responsive, mobile friendly slideshows that are simple to customise
Co-Authors Plus
Read more about Co-Authors PlusAssign multiple bylines to posts, pages, and custom post types via a search-as-you-type input box
WP SlimStat
Read more about WP SlimStatA powerful real-time web analytics plugin for WordPress.
TablePress
Read more about TablePressTablePress enables you to create and manage tables, without having to write HTML code, and it adds valuable functions for your visitors.
Post Snippets
Read more about Post SnippetsKeep a snippet library of text, HTML or PHP code to be used in posts. Variables can be set for more flexibility.
Instagram Importer
Read more about Instagram ImporterBackup your instagram photos & display your instagram archive. Supports importing to custom post-types & adding custom taxonomies