At the moment it supports floppies, tar and gzip files, zip, bzip2, ar and rar files, ftp sessions, http, webdav, rsh/rcp, ssh/scp. Quite a few other handlers are implemented with the Midnight Commander's external FS.
AVFS is (C) under the GNU GPL (see the file COPYING). The shared library supporting AVFS with LD_PRELOAD is (C) under the GNU LGPL (see the file COPYING.LIB).
AVFS comes with ABSOLUTELY NO WARRANTY, for details see the file COPYING.