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>
<p>Antispam will automatically check submissions of the regular forms but ignores all AJAX requests.<br />
If you want to change this behaviour, you can use filter <code>concise_antispam_need_to_validate_token</code>.<br />
See example:</p>
<p><em>Disable Antispam for some forms:</em></p>
<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>
<p>You can also always manually call <code>\Concise\Antispam::validateTokenOrDie()</code> in your custom handler.</p>
<h3>Formidable Forms integration</h3>
<p>For proper work disable the honeypot checking in the forms</p>


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  …

<p>CheckBot — simple one-click captcha-plugin created for people. It is very easy to use, and look nice, but at the same time, fully customizable, and quite seriously protect your blog from spam.</p>
<h4>Features</h4>
<ul>
<li>Antispam: The plugin uses javascript and randomly generates identifiers and field names, which allows the plugin to automatically filter out fine sent spam.</li>
<li>Support languages: The plugin supports Russian and English languages.</li>
<li>Fully customizable appearance.</li>
<li>The plugin can be used immediately after installation, without additional configuration.</li>
<li>You can configure the output plugin yourself anywhere on the page comments.</li>
<li>If the user is not the correct picture, or even forgot to select it, the plugin will tell him about it, and, just in case it will write a comment.</li>
</ul>
<h3>Help</h3>
<p>You may ask questions at the plugin page – <a href="http://deadblog.ru/checkbot" rel="nofollow ugc">http://deadblog.ru/checkbot/</a>, or write me e-mail – lifeiscoming@gmail.com.</p>


CheckBot

This antispam plugin provides very simple(one-click) and powerful captcha for your blog.

Concise Antispam vs CheckBot