The project GSManager (formerly ManuAdminMod) was discontinued on 01.01.2020 - this internet presence stays available, but the software is no longer maintained. Thanks for your support over the more than 10 past years!
Russian Language for GSManager.
Installation:
Unpack the archive into the root folder of your GSManager installation, edit the file basics.json and set encodingto Windows-1251 and language to russian as shown in the image below: