Gnash is a Flash movie player and Web browser plugin for Firefox, Mozilla, Konqueror, and Opera. Gnash supports many SWF v7 features and ActionScript3 classes. Gnash supports the majority of Flash opcodes up to SWF version 7, and a wide sampling of ActionScript classes for SWF version 8.5. Gnash also runs on many GNU/Linux distributions, embedded GNU/Linux, FreeBSD, NetBSD, OpenBSD, non x86-processors, and 64-bit architectures. There is also a standalone player for GNOME or KDE based desktops.