Scott Grant

Want to start a split-test right away? Choose a unique test id, provide a piece of code for the first group and a piece of code for the second, and define an id to indicate a conversion.
For example, let’s define a split test called clothes. In the first group, we’ll say “Your clothes are red.” In the second group, we’ll say “Your clothes are black.” When we convert, we’ll use the id clothes_complete.
Then, we’ll do this on our test page:
<a href=”convert.php”>[ab-see id=clothes]</a>
And on the page we want to get to:
[ab-convert id=clothes_complete]
That’s it!
Inspired by the practice of copying the smartest people you know, AB-See is based on Patrick McKenzie’s A/Bingo (http://www.bingocardcreator.com/abingo) and Ben Kamens’ GAE/Bingo (http://bjk5.com/post/10171483254/a-bingo-split-testing-now-on-app-engine-built-for).
Built for our A/B testing needs at Scent Trunk (https://scenttrunk.com).

A/B See

splitwit

This plugin automatically adds the SplitWit code snippet to your WordPress site. SplitWit lets you create a variation of your web page using our visual editor. It splits traffic between the original version and your variation. You can track key metrics, and let SplitWit determine a winner. No code needed.
After creating a SplitWit account, and starting a project, you can add the project ID code to the plugin’s settings page. That’s all you need to start improving your site’s conversion rate.
This plugin relies on SplitWit, a third-party service. The SplitWit service adds code to your website to run A/B experiments. It also collects data about how users interact with your site, based on the metrics you configure.
SplitWit Terms of Service: https://www.splitwit.com/terms-of-service 
SplitWit Privacy Policy: https://www.splitwit.com/privacy-policy

SplitWit

Optimize your website for maximum convertibility. This plugin lets you use SplitWit to run experiments on your WordPress website.

A/B See vs SplitWit