The only program that can export text from .brh documents and save them as .txt (or other common document formats) would be Baraha, a software that was actually used to save the .brh document in first place. Used for Indian document conversions.
Convert Baraha document file to Simple text file.
We found one software available in the database for this conversion.
Microsoft Windows software - convert brh to txt on Windows
Editor for Indian language for Windows.
Convert from brh file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.