GOCR is an OCR (Optical Character Recognition) program, developed under the GNU Public License.
GOCR can be used with different front-ends, which makes it very easy to port to different OSes and architectures. It can open many different image formats, and its quality have been improving in a daily basis.
GOCR or JOCR?
The original name is GOCR. It's what is used internally in the sources. But, when registering the site at Sourceforge, gocr was already taken. So, it's kind of both. Yeah, we know.
Some examples of how you can use gocr:
gocr -h # help
gocr file.pbm # minimum options
gocr -v 1 file.pbm >out.txt 2>out.log # generate text- and log file
djpeg -pnm -gray text.jpg | gocr - # using JPEG-files
gzip -cd text.pbm.gz | gocr - # using gzipped PBM-files
giftopnm text.gif | gocr - # using GIF-files
gocr -v 1 -v 32 -m 4 file.pbm # zoning and out30.bmp output
xli -geometry 400x400 out30.bmp # see details using xli (recommanded viewer)
wish gocr.tcl # X11-tcl/tk-frontend (development version)
# see manual pages for more details