During installation or in the Configuration Window (F2), you can set the software language to Russian (Rus).
The latest versions include enhanced sky cultures, 6D astrometry, and updated catalogs. Detailed Post: Key Features (Stellarium 25/26) Download Spellarium Rus rar
Modelling movement for 15 couples of binary stars. During installation or in the Configuration Window (F2),
The 26.1 release is approximately 450 MB. Download Spellarium Rus rar