Hi everyone,
We created this project in response to seeing many clients making changes blindly based on gut feeling, and not being completely satisfied by the existing multivariate testing solutions. We wanted a simple way to write variants in HTML(or haml or jade).
For those of you unfamiliar with this design technique, new designs are tested on a statistically significant portion of your users to test for higher conversion rates.
It's also MIT licensed and works with google analytics: https://github.com/255BITS/xander
Thanks for any feedback you have!