Visual Composer is a front and back end drag and drop editor with quick customization of all wordpress pages, with 60+ templates and 45+ content elements allowing the best looking web pages for everyone. Below you can find everything you need to know about visual composer for wordpress.

You can purchase the plugin here: Purchase Visual Composer

WooCommerce is a free eCommerce plugin that allows you to sell anything, beautifully. Built to integrate seamlessly with WordPress, WooCommerce is the world’s favorite eCommerce solution that gives both store owners and developers complete control.

With endless flexibility and access to hundreds of free and premium WordPress extensions, WooCommerce now powers 30% of all online stores — more than any other platform.

WooCommerce

Contact Form 7 can manage multiple contact forms, plus you can customise the form and the mail content flexibly with simple markup. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering and so on.

https://wordpress.org/plugins/contact-form-7/

Yoast SEO (formerly known as WordPress SEO by Yoast) is the most complete WordPress SEO plugin that exists today for WordPress.org users. It incorporates everything from a snippet editor and real time page analysis functionality that helps you optimize your pages content, images titles, meta descriptions and more to XML sitemaps, and loads of optimization options in between.

https://en-gb.wordpress.org/plugins/wordpress-seo/

bbPress is forum software, made the WordPress way.

Have you ever been frustrated with forum or bulletin board software that was slow, bloated, and always got your server hacked? bbPress is focused on ease of integration, ease of use, web standards, and speed.

We’re keeping things as small and light as possible while still allowing for great add-on features through WordPress’s extensive plugin system. What does all that mean? bbPress is lean, mean, and ready to take on any job you throw at it.

https://wordpress.org/plugins/bbpress/

Easily sell any customized services & products creating your own flat and responsive cost calculator or payment forms (even with subscription !) on your wordpress website .
This can be used to sell any type of service or products: applications, websites, graphics, seo, pets, lunar fragments …. or anything else.

Your customers can get an accurate estimate of their request (the final estimate/order is sent by email) or directly do payment using Paypal. The customer’s email can be automatically sent to your MailChimp / MailPoet / GetResponse list .

You can purchase the plugin here: WP Cost Estimation Plugin