Optimizely

What I like most about Optimizely is that it has the best approach for A and B testing. You can check on their website and type in any domain name they are going to allow you to simulate A and B test with ease right on their homepage. It is actually easy to get started from their home page.

I have found sometimes that we are get sophisticated with our testing and tracking things appropriately and ensuring for data integrity is not always as good/easy as you would think it would be. Their support team is available, but they were not always able to help us to debug the issue.

I must say this that we have selected Optimizely as we need to start A and B testing immediately on the priority basis. It is very important to setup and we could start testing the very same day. It definitely had delivered every requirement and need we had. We were very well able to leverage it to achieve dramatic increases in our conversion rates. Be sure to check out Visual Website Optimizer. we have heard many things about them as well. We used it to test different landing page configurations with good results. We saw a good rate increase in our sales just by doing minor changes as by changing our primary product photo.