RecommendizR is a project mainly written in JAVASCRIPT and JAVA, it's free.
A recommendation website using Apache Mahout.
RecommendizR is a simple recommendation website.
See an example here : http://www.recommendizr.fr
Installation
API : This application support Cross Origin Resources Sharing (CORS), so you can use it in you own website with ajax call. But be carefull, some browser, like IE doesn't support CORS.