Concise Studio

<h4>Algorithm</h4>
<ol>
<li>Plugin generates token on the backend side.</li>
<li>Plugin adds hidden field for token in each form which will use method “POST” after rendering of the page.</li>
<li>Plugin inserts token in the field after user’s interaction with site.</li>
</ol>
<h4>For developers</h4>
Antispam will automatically check submissions of the regular forms but ignores all AJAX requests. 
If you want to change this behaviour, you can use filter <code>concise_antispam_need_to_validate_token</code>. 
See example:
Disable Antispam for some forms:
<pre><code>add_filter("concise_antispam_need_to_validate_token", function($needToValidateToken) {
 if (!empty($_POST['do-not-check-antispam-token'])) {
 $needToValidateToken = false;
 }

 return $needToValidateToken;
});
</code></pre>
You can also always manually call <code>\Concise\Antispam::validateTokenOrDie()</code> in your custom handler.
<h3>Formidable Forms integration</h3>
For proper work disable the honeypot checking in the forms

Concise Antispam

Very simple antispam plugin. Users do not need to enter any captcha, working completely on background. No need to administer: just install the plugin  …

OOPSpam Team

<a href="https://www.oopspam.com/" rel="nofollow ugc">OOPSpam</a> is a modern anti-spam solution that uses advanced AI and machine learning to protect your WordPress forms and comments from spam. Our system has blocked over 1 billion spam attempts across 3.5M+ websites, maintaining 99.9% accuracy without compromising user privacy or accessibility.
Unlike traditional CAPTCHA solutions that can hurt your conversion rates, OOPSpam works silently in the background, analyzing submissions against our extensive database of 500M+ malicious IPs and emails to catch both bot and human spammers.
<h3>Why Choose OOPSpam?</h3>
🚀 Zero Impact on User Experience 
– No CAPTCHA puzzles or challenges that hurt conversions 
– Works silently in the background without JavaScript or tracking 
– Maintains fast website performance with server-side processing
🛡️ Intelligent Spam Prevention 
– Catch 99.9% of spam using advanced machine learning and contextual analysis 
– Protect against both automated bots and human spammers 
– Auto-detect spam patterns unique to your website’s context 
– Block spam from VPNs and known malicious sources 
– Prevent WooCommerce card testing attacks with advanced checkout protection
🔒 Privacy-First Design 
– GDPR-compliant with no data stored on our servers 
– Optional IP and email analysis for maximum privacy 
– All logs stored in your WordPress database 
– Remove sensitive information from messages automatically
🌍 Smart Geographic Controls 
– Target your relevant market by blocking specific countries 
– Filter submissions by language to focus on your audience 
– Prevent fraud and abuse from high-risk regions
⚙️ Powerful Management Tools 
– View and manage spam entries with detailed detection reasons 
– Export data for analysis or reporting 
– Rate limiting to prevent abuse and click fraud 
– Manual override options for complete control
🏢 Perfect for Agencies 
– Use one API key across unlimited websites 
– Centralized logging option in OOPSpam dashboard 
– Consistent protection across all your client sites
<h3>What Our Users Say</h3>
<blockquote>
“It’s eliminated all spam, and even the need for CAPTCHA. Setup is quick and the interface is intuitive.” – @gotmick
“Very responsive support and dev team. Customer support was amazing, response time was immediate and issues were solved instantly.” – @viv18germany
“Pricing is perfect for agencies as they do tiers by actual # of API calls and no limit on the number of sites you can install this on.” – @squarecandy
</blockquote>
<h3>By the Numbers</h3>
<ul>
<li>3.5M+ websites protected daily</li>
<li>1B+ spam attempts blocked</li>
<li>99.9% detection accuracy</li>
<li>24/7 customer support</li>
<li>500M+ malicious IPs and emails in our database</li>
</ul>
<h3>Works With Everything</h3>
The plugin seamlessly protects your comments, site search, and all major form plugins. No extra configuration needed – it just works!
<h3>Supported form & comment solutions:</h3>
<ul>
<li>WooCommerce Order & Registration</li>
<li>BuddyPress</li>
<li>Elementor Forms</li>
<li>Ninja Forms</li>
<li>Gravity Forms</li>
<li>Kadence Form Block and Form (Adv) Block</li>
<li>Fluent Forms</li>
<li>Breakdance Forms</li>
<li>WS Form</li>
<li>WPDiscuz</li>
<li>Forminator</li>
<li>WPForms</li>
<li>Formidable Forms</li>
<li>Contact Form 7</li>
<li>Bricks Forms</li>
<li>Toolset Forms</li>
<li>Piotnet Forms </li>
<li>GiveWP Donation Forms</li>
<li>MailPoet</li>
<li>Beaver Builder Contact Form</li>
<li>Ultimate Member</li>
<li>MemberPress</li>
<li>Paid Memberships Pro</li>
<li>Jetpack Forms</li>
<li>MC4WP: Mailchimp for WordPress</li>
<li>SureForms</li>
<li>SureCart</li>
<li>QuForm</li>
<li>HappyForms Pro</li>
<li>Avada Forms</li>
<li>MetForm</li>
<li>ACF Frontend Forms</li>
</ul>
OOPSpam Anti-Spam WordPress plugin requires minimal configuration. Check out our <a href="https://help.oopspam.com/wordpress/" rel="nofollow ugc">comprehensive WordPress guide</a> for detailed setup instructions. To get started quickly, <a href="https://app.oopspam.com/Identity/Account/Register" rel="nofollow ugc">get a key</a> and paste it into the appropriate setting field under Settings=>OOPSpam Anti-Spam. If you have a contact form plugin, make sure you enable spam protection on the settings page.
Please note: This is a premium plugin. You need an <a href="https://app.oopspam.com/Identity/Account/Register" rel="nofollow ugc">OOPSpam Anti-Spam API key</a> to use the plugin. Each account comes with 40 free spam checks per month. 
If you already use OOPSpam on other platforms, you can use the same API key for this plugin.

OOPSpam Anti-Spam: Spam Protection for WordPress Forms & Comments (No CAPTCHA)

This is a great plugin with a very responsive and knowledgable support team.

I emailed them yesterday with a kind of obscure WooCommerce feature request and they had a fix deployed within 12 hours.

Yes, it's a paid service if your site has any kind of volume at all, but it's extremely effective and fully built for privacy and GDPR compliant. We're trying to de-G00glify everything for our clients so their websites are not tracking users every move and implementing this service is part of our (slow and tedious) move in that direction. 

Pricing is perfect for agencies as they do tiers by actual # of API calls and no limit on the number of sites you can install this on. Most competitors we were looking at had per-site license structures that were not going to work for us.

Works well for default comment fields, WPForms and WooCommerce. Has some other integrations but those are the ones we tried.

If you have any doubts, just go back into your logs of spam that slipped through reCAPTCHA and Akismet and a honeypot... pick a message and enter the data on the app.oopspam.com dashboard you can edit the test data right there and it will show you what spam score their system would give that message.

Great Service

Protect your forms from spam with 99.9% accuracy - no CAPTCHA, no JavaScript, no tracking. Trusted by 3.5M+ websites.

Concise Antispam vs OOPSpam Anti-Spam: Spam Protection for WordPress Forms & Comments (No CAPTCHA)