Hi Atif, thanks for your question. You can see all current RACHEL modules and search by language at www.oer2go.org. We currently have Wikipedia and Khan Academy in Arabic, which are two of our most popular modules.
We have had some requests for more Arabic content, but we currently have limited staff time to add new modules (which can take several weeks) and would need an Arabic speaker to help us choose which content to add by searching for openly licensed Arabic content. If you find any openly licensed Arabic content (usually you can tell by a Creative Commons “CC-BY” license listed on the website) that you’d like to see on RACHEL, please let us know.