The aim of the mixedpsychophysics project is to provide statistical tools (such as R codes, models, tutorials, and link to articles) for the psychophysics community. This project has a special focus on open-source programming language. For the moment, the codes and documentation are restricted to R, tough other open programming languages (such as Julia) might be considered in the future.
You can dowload the R codes from the Blogroll at the bootm of the page. See the R code page for details.