Ocr

good day guys. I know most of you will answer me regarding programming ocr that its not possible on this forum to give assistance on ocr.

but instead of asking for coding, I would like to ask if you know of any ocr software that is the most efficient in character recognizing captcha images and pdf files. but if someone could also give assistance on coding, that would even be better.

I hope someone could atleast give answer. Thanks.