List of packages, maintainers and dev sites?

Hi, I'm looking for single point of entry to the - list of packages that can be installed to 21.x. Alternatively to a list of XEmacs 20.4 features (that is, eg. 'w3 for bunch of W3 files) - Contact address to the maintainer of the feature - Development site URI from where to get latest version or beta for the feature. I suppose that can be somehow created from current packaging system, but I only have access to 20.3. I could grep the provide commands from the source tree, but is this accurate? Could you put this list available somewhere public and update as needed? jari