1. Contact Form by ContactMe.com
This is the contact form choice for many WordPress blog owners. Its provides, by far, the quickest and the easiest way to get a fully customizable contact form. It has very great features such email forwarding, mobile access, reports, task manager and can be integrated to Facebook, MailChimp, Wibiya, Webs and Constant Contact.
2. Gravity Forms
Gravity forms is very easy to use. You just create the fields you want and publish the form. It has great features such multi-page forms with progress bars and much more.
3. Custom Contact Forms by Taylor Lovett
This plugin allows you to customize every aspect of your forms without any knowledge of CSS: borders, padding, sizes, colors. It also has ton of features such as required fields, captchas, tooltip popovers, unlimited fields/forms/form styles, use a custom thank you page or built-in popover with a custom success message set for each form.
4. Contact Form 7
With Contact Form 7 you will be able to create., customize and manage multiple contact forms. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering, file uploading etc.
5. TDO Miniforms
TDO Miniforms allows you to create highly customizable forms that can be used by non-registered as well as subscribers to submit and edit posts and pages.
6. Slick Contact Forms
This plugin allows you to create a widget that adds a contact form using either a floating, drop down button or a sticky, sliding tab. It can handle multiple forms on each page.
8. Fast Secure Contact Form
This plugin allows webmasters to create and manage contact forms within their WordPress powered sites. It allows your users to send you a quick email message. It has CAPTCHA system and supports Akismet.
10. Constant Contact Form
This is one of the best email marketing plugins for WordPress. It allows you to generate unlimited number of unique forms with multiple options.
11. Clean Contact
This plugin allows you to create simple contact forms that are easy to use by your website users. It supports Akismet and its able to fight spam-bots with strong CAPTCHA system.