Russian Language Support for OCRopus 

Existing Open Source OCR Systems that Can Handle Russian

• Pavel Syomin had success recognizing Russian with his libocr library. Source and some related data can be downloaded from http://www.radico.ru/syomin/ libocr depends only on glib and libtiff. libocr supports UNICODE out-of-the-box. On limited class of documents recognition accuracy can run up to 99,8%

Existing Commercial OCR Systems that Can Handle Russian

• Abbyy http://www.abbyy.com/

Ground-Truthed Russian OCR Data (Scans + Transcription)

• libocr includes few training data for OCR.
  

Russian Dictionaries and Text Corpora (for Statistical Language Modeling) 

• List of Russian words in Windows-cp1251 encoding can be downloaded here http://www.englspace.com/dl/files/dic_ru.zip