WordPress plugin… Which is the best free plugin to create custom WordPress forms?

In my opinion, the best plugin to create a custom WordPress form is “Contact Form 7“.

The Contact Form plugin is the most popular free custom forms plugin with over 18 million downloads on WordPress Plugin Repository.

Contact Form 7 is easy to use and customize and  it can manage multiple contact forms. You can customize each form and e-mail content with HTML and CSS. CF7 plugin also supports Ajax-powered submitting, CAPTCHA and Akismet spam filtering.

Contact Form 7 supports multilingual plugins as : WPML(premium plugin) and Polylang (free plugin) and you can create custom forms for each language.