What's the OCR plugin you guys use?

Just for knowledge, I wanted to know the OCR plugin you guys use to read some websites' captchas. Is it the Java OCR project from SourceForge?
(Link: http://sourceforge.net/projects/javaocr/?source=directory)

Thanks and Happy Holidays!

We use GOCR for some captchas and completely custom written code for others. [jocr.sourceforge.net]