XXy is a WYSIWYG-editor for Xy-pic code, which is
used by the LaTeX package for typesetting graphs
and diagrams. It works on Xy-pic snippet files,
which can be included from a standard .tex file.
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.