Gravity Forms – Easily create web forms and manage form entries within the WordPress admin.
NextGEN Gallery by Photocrati – The most popular gallery plugin for WordPress and one of the most popular plugins of all time with over 7 million downloads.
Soliloquy – Soliloquy is the best responsive WordPress slider plugin. Period.
TablePress – TablePress enables you to create and manage tables in your posts and pages, without having to write HTML code, and it adds valuable functions for your visitors.
The Events Calendar – The Events Calendar is a carefully crafted, extensible plugin that lets you easily share your events. Beautiful. Solid. Awesome.