First, a happy new year to all!
It’s still a pity that development of AscoGraph has been abandoned. But the project page which still exists (AscoGraph – the Antescofo graphical editor | Ircam Forum) doesn’t mention that the tool is deprecated. The zip which can be downloaded on this page only contains the Readme, but no information about the destiny of AscoGraph or hints what could be used in place of it.
The link given on the AscoGraph page in the AntescofoDoc (Ascograph - AntescofoDoc), by the way, is also dead:
http://forumnet-dev.ircam.fr/antescofo-converter/
antescofoimporter (GitHub - Antescofo/antescofoimporter: MusicXML to Antescofo Convertor) seems to be a replacement for some features of AscoGraph. But is there a binary distribution? I didn’t find anything about antescofoimporter in the AntescofoDoc.