If you need to do some A/B testing at minimal cost, this is our quick overview of the available options that we found.
There are some powerful free options, and some free trials for some superb products. As with all things, the free options come with limitations that mean that for some circumstances it may be totally worth paying up for the right product/service. Free is not always better, and paid is not always better! We leave the final decision and hard negotiation to you :)
Optimizely has a 30 day trial, then paid plans. No public pricing. Has...