bradvin

<blockquote>
This plugin is an add-on for the amazing Gravity Forms Plugin. 
 Check out my other free <a href="http://themergency.com/gravity-forms-addon-plugins/" rel="nofollow ugc">Add-ons for Gravity Forms</a>
</blockquote>
Compatible with Gravity Forms v1.7.2
Requires at least v1.5 of Gravity Forms
“Ready Classes” were introduced in Gravity Forms 1.5. Using these new classes, you can easily create more advanced alternative layouts for the fields in your forms. Excellent idea, however, the problem is you always need to remember what the exact class name is. Now with the CSS Ready class selector, you don’t need to remember. Simply click on a button to lauch the popup and choose the class you want to add from the list.
features
<ul>
<li>Convenient button added under the advanced tab next to the “CSS Class Name” field</li>
<li>Clean and simple popup that lists all the “Ready Classes”</li>
<li>Add more than one “Ready Class”</li>
<li>Double click a “Ready Class” to add it and auto-close the popup</li>
</ul>

Gravity Forms CSS Ready Class Selector

Easily select a CSS "Ready Class" for your fields within Gravity Forms

bannersky

This plugin helps you avoid spam submissions from Gravity Forms, Formidable Forms, WPForms, Contact Form 7 and Forminator.
This is the free version and you can set it up to use a blacklist. If the field value contains / same as an item / keyword in the applied blacklist, the form submission will be blocked. It’s easy to use, you just need to create a blacklist, enable settings for the form and apply the blacklist to the form fields. You can set one or more fields to validate. Validation messages can be customized for the form.
The Pro version described here: https://www.bannersky.com/gravity-forms-blacklist-and-custom-validation/ can also be used as a whitelist, IP address, email or invitation code to validate visitor input. Support for blocking email domains, giving you the option to allow or block submissions instead of always allowing submissions. Supports blocking IP addresses by country or allowing only IP addresses from a certain country.
<h3>Short Description</h3>
This plugin helps you avoid spam submissions from Gravity Forms, Formidable Forms, WPForms, Contact Form 7 and Forminator. It checks the form field content and block submitting base on your keywords. Blocking IP, Country is only supported in the Pro version.

BSK Forms Blacklist

Perfect

Checks field content and block submitting base on your keywords. Blocking IP, Country is only supported in the Pro version.

Gravity Forms CSS Ready Class Selector vs BSK Forms Blacklist