Lucas Bonomo

This shortcode just put the forms tags () and some hidden fields to send this information on a email.
Between the shortcode tags [tua-forma][/tua-forma] feeling free to put a HTML5 forms and don’t forget the “submit” button.
This plugin do not validate yours fields, you need used the HTML5 tag to validate the form fields. 
See this link for more information https://developer.mozilla.org/es/docs/Web/HTML/Elemento/input

Tua Forma

This shortcode just put the forms tags () and some hidden fields to send this information on a email.

Joseph Persie

The purpose of this plugin is to provide blog admin with an interactive form to create, update and display forms throughout the site. Shortcode can be provided in whatever page one wishes to display the form. The shortcodes are provded in the Form Info tab. When creating the form you have the option to provide the landing page or a success message instead. If the landing page is left blank the form will display a success message up submission. You can create the following inputs: select, hidden, checkboxes, radios, textareas and submit buttons. You can provide arbitrary attributes for each input as needed. You can also specify a notifcation email for the submission to be sent to. The code is clean, decoupled and modifiable and the interface is jQuery interactive. The form builder requires simple html knowledge such as what should go in in label, name and value attributes.
<iframe class="youtube-player" width="640" height="360" src="https://www.youtube.com/embed/ATLYNgYRbUU?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation"></iframe>

Supra Open Form

a plugin to create, modify and retrieve forms and manage submissions.

Tua Forma vs Supra Open Form