GravityKit

This Gravity Forms add-on blocks spam using a non-obtrusive anti-spam measure and can email a spam report summary.
<h3>Spam blocking for Gravity Forms</h3>
To get started, all you need to do is activate the plugin!
<h3>Is the Gravity Forms honeypot field not working for you? 🍯 🐝</h3>
Zero Spam is better than the Gravity Forms anti-spam honeypot field. If you’re getting spammed, try this plugin.
<h3>Use this plugin instead of reCaptcha</h3>
reCaptcha is user-hostile! Use this instead! Users don’t need to click stoplights, crosswalks, or bicycles when you use this plugin to stop spam.
<h3>Enable or disable filtering per form</h3>
If you only want the plugin for specific forms, that’s possible! The plugin adds a simple “Prevent spam using Gravity Forms Zero Spam” setting to each form (requires Gravity Forms 2.5 or newer).
<h3>Spam report emails</h3>
Spam summary report emails are disabled by default. Once enabled, a spam summary that includes the number of entries per-form will be sent via email.
Choose whether you want to be notified after the number of entries reaches a threshold (e.g. 10 spam entries) or after a certain number of days (e.g. every week). If there are no spam entries, no report will be sent.
Requires <a href="https://www.gravityforms.com/?partner_id=1210629&irgwc=1&utm_medium=affiliate&utm_campaign=1210629&utm_source=Katz%20Web%20Services%2C%20Inc." rel="nofollow ugc">Gravity Forms</a>.
Brought to you by <a href="https://www.gravitykit.com?utm_source=plugin&utm_campaign=zero-spam&utm_content=readme" rel="nofollow ugc">GravityKit</a>. We create essential Gravity Forms Add-Ons.

Gravity Forms Zero Spam

It helps way more than Gravity Forms' built in features, and it's nice to try invisible options before making users deal with Captcha quizzes. :)

Appreciate this plugin a lot!

Besides its simple approach, David Walsh’s “Zero Spam” technique, it works well.

Simple and effective

An amazingly simple yet successful strategy, this plugin captures pretty much all automated spam with little chance of false positives. No need to bother people with nasty CAPTCHAs, just install this plugin enjoy the ensuing peace.

Sends automated spam to the bit bucket

Enhance your Gravity Forms to include anti-spam measures originally based on the work of David Walsh's "Zero Spam" technique.

Freemius

Matt Biscay

Tired of deleting spam comments every day? SpamJam is a lightweight, invisible anti-spam solution that blocks automated spam before it hits your database—without annoying your legitimate users with captchas or verification steps.
<h4>Why SpamJam?</h4>
Unlike traditional anti-spam plugins that rely on third-party services or frustrating captchas, SpamJam uses intelligent honeypot techniques and behavioral analysis to silently eliminate spam bots. Your real visitors won’t see any difference, but spam bots will be stopped cold.
<h4>Free Features</h4>
✅ Honeypot Protection – Invisible fields that trap spam bots 
✅ Referrer Validation – Blocks direct form submissions 
✅ Nonce Security – CSRF protection for all comment forms 
✅ Smart Blocklist – Filters common spam keywords 
✅ Zero Configuration – Works immediately after activation 
✅ No Captchas – Never annoy your real users 
✅ Lightweight – Minimal impact on site performance 
✅ WooCommerce Compatible – Works with HPOS
<h4>Pro Features (Premium)</h4>
🚀 Registration Spam Protection – Protect user registration forms with email verification 
🚀 Premium Blocklist – Auto-updating list of 15,000+ spam terms 
🚀 Custom Blocklist – Add your own keywords and patterns to block 
🚀 Geographic Blocking – Block comments from specific countries 
🚀 IP Blocking – Block specific IP addresses or ranges 
🚀 Rate Limiting – Prevent spam floods with configurable limits 
🚀 Email Whitelist – Always allow trusted email addresses 
🚀 Spam Logging & Analytics – Track and analyze blocked spam attempts 
🚀 Content Validation – Set minimum comment length and maximum links 
🚀 Contact Form Protection – Protect Contact Form 7, WPForms, Gravity Forms 
🚀 User Enumeration Blocking – Enhanced security against attacks 
🚀 Priority Support – Get help when you need it
<a href="https://utopique.net/products/spamjam/" rel="nofollow ugc">Upgrade to SpamJam Pro →</a>
<h4>Perfect For</h4>
<ul>
<li>Blogs with active comment sections</li>
<li>Membership sites</li>
<li>WooCommerce stores</li>
<li>Community websites</li>
<li>Any WordPress site tired of spam</li>
</ul>
<h4>How It Works</h4>
SpamJam uses multiple layers of protection:
<ol>
<li>Honeypot Fields – Hidden form fields that only bots fill out</li>
<li>JavaScript Validation – Ensures forms are submitted by real browsers</li>
<li>Referrer Checking – Verifies submissions come from your site</li>
<li>Hash Validation – Cryptographic verification of form integrity</li>
<li>Keyword Filtering – Blocks known spam patterns</li>
</ol>
All of this happens invisibly in the background. Your legitimate users never see a captcha or verification step.
<h4>Privacy First</h4>
SpamJam doesn’t send your data to third-party services. Everything happens on your server, keeping your users’ information private and your site GDPR-compliant.

SpamJam

Stop 99% of spam comments and registrations automatically. Zero captchas, zero hassle. Your visitors won't even notice it's there.

Gravity Forms Zero Spam vs SpamJam