Plugin allows to add Marketo forms (www.marketo.com) to the site using shortcodes and function. Also it makes forms responsive, and resets styles.

Ryan IT Solutions

Marketo Lite for Contact Form 7

This extension allows you to capture and generate leads, tracking and push data into Marketo Lead Database using REST API.

Hassan Bawab

Sam Timalsina

MSync

MSync makes it easy to create and embed Marketo forms in WordPress

rodhomor

Remove Marketo Form Styles

This plugin removes all inline styles, forced style sheets, and bloated HTML from your embedded Marketo forms.

Yanir Calisar

Genius Marketo Form Prefill (API-Free)

Automatically prefill your website forms with Marketo lead data

vitalik1921

Before using you should open Settings -> Marketo Forms and enter your base URL and Subscriber ID. This information you 
can get from Marketo, or you can extract it from generated code in Marketo back-end. It looks like this:
MktoForms2.loadForm(“base url”, “subscriber id”, $form_id, callback_function);
After that you can use shortcode to display Marketo from:
[marketo id=10]
where id – is form identificator
Also developers can use function to display forms:
marketo_display_form($form_id);

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