Locale en_RU is a glibc locale, an English language locale for Russia. It is developed and tested on Fedora with Gnome 3, but it should work for other desktop environments in RPM-based Linux distributions.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.