Thomas Leonard has announced the release of ROX-Filer 2.1.3, the RISC OS-esque filer for Linux and other Unix-compatible OSes. Features new to 2.1.3, described as a developer release but still "quite stable", include improved Xinerama support, a 'brief' option for copy and move action windows and other improvements and bug fixes.ROX-Filer's user interface is "based on the RISC OS filer, and it supports similar concepts, such as application directories, drag-and-drop saving and popup menus" and provides an equivalent to the RISC OS pinboard and iconbar. You can use ROX-Filer with your choice of existing X Windows desktops, or with the ROX desktop.
Links
ROX and ROX-Filer website