Beside Tesseract which was a state-of-the-art OCR software by HP in the early nineties and recovered by Google a few years ago and is open source. There is Cun

Beside Tesseract which was a state-of-the-art OCR software by HP in the early nineties and recovered by Google a few years ago and is open source. There is Cuneiform, a former main competitor to ABBYY Finereader. CuneiForm got open sourced a view years ago, though in a sad state (project files where in VS C++ 6 ('98), comments in Russian), but a community fixed that and ported it to Linux. It's also probably the best one for Russian language. It also has an UI and some advanced features that only ABBYY amd Cuneiform have, but non of the other competitors (certainly no other open spurce OCR package). https://en.wikipedia.org/wiki/CuneiForm_(software) https://en.wikipedia.org/wiki/CuneiForm_(software)