GRAC is a grammar checker. It is based on learning
algorithms, so it needs a tagged text corpus and a mistake-
free corpus to learn grammar rules and then detects
grammatical errors on a sentence or text given.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.