Deluge is a BitTorrent client, created using Python and GTK+ (through PyGTK). Deluge is currently usable on POSIX-compliant operating systems. It is intended to bring a native, full-featured client to GTK desktop environments such as GNOME and Xfce. An official Windows port is also in development. The program uses the libtorrent C++ library. Up through the 0.4 branch, this was done through the python-libtorrent bindings for Python. In 0.5, the python-libtorrent bindings were merged into the main client as the deluge_core extension. In future releases, it is likely the official Python bindings for libtorrent will be used.