Brandon Fenning

Since the vast majority of WordPress spam is automated in nature, the goal of BotBlocker is to block comment spam bots and not hinder users. This is accomplished through the use of honeypot technology, which tricks the spambot into identifying itself by performing actions that a human could not.
BotBlocker’s features include:
<ol>
<li>Works out of the box to block spam</li>
<li>Automatically stops spam-bots from commenting</li>
<li>Zero hindrance to users: no CAPTCHAS, math questions, passwords or extra input required</li>
<li>Zero false positives and ignores registered users</li>
<li>Can be configured to completely block spam-bots or flag comments as spam</li>
<li>Spam detection messages can be easily adjusted</li>
<li>No javascript or cookies required</li>
<li>Hooks into <code>wp-comments-post.php</code> to prevent spam-bots from directly submitting spam comments</li>
<li>Should work fine with most customized comment forms</li>
<li>No API keys required</li>
</ol>
http://www.lform.com/botblocker/ for more information.
Plugin by <a href="http://www.lform.com/" rel="nofollow ugc">LFORM, a web design company</a> in New Jersey.

BotBlocker

Kills spam-bots, leaves humans standing. No CAPTCHAS, no math questions, no passwords, just spam blocking that stops spam-bots dead in their tracks.

jumbaeric

This is a conversion rate optimization plugin that adds a call to action button on woocommerce product archives or product page that opens a popup window when clicked, the name of the button and the content(contact 7 shortcode, map shortcode etc) of the pop up window can be inserted in the admin settings area.
This plugin requires you have woocommerce installed and activated.
How to use it? Visit http://itboxkenya.com/increase-e-commerce-conversion-rate-woo-short-code-popup/
Current add-ons 
* shortcode – Enter shortcode and its content will appear on the popup * popup button text
Coming soon 
* (Got more ideas? Tell me!)
If you have suggestions for a new add-on, feel free to email me at eric@itboxkenya.com. Want regular updates? Become a fan of my sites on Facebook! http://www.facebook.com/itboxkenya Or follow my sites on Twitter! http://twitter.com/itboxkenya

woo-shortcode-popup

Works well

Creates a popup button on woocommerce shop page

BotBlocker vs woo-shortcode-popup