- Moorie -- taken by volunteers some time ago, so chances are it still has future.
- VyQChat -- forked as TriX project a long time ago. Not sure whether it's still actively developed (last update: June 2008).
My website was also updated with links to new QComicBook packages provided by volunteers; binary package is now also available for Slackware Linux and PKGBUILD is availabe in AUR repository for Arch Linux. Thanks for those involved in preparing binary packages for QComicBook!