I've begun work on an Adobe-AIR like system, similar to something I've already done with Tcl (http://code.google.com/p/deskml/) but with Ruby instead. Below's a link to a forum where I posted about it along with a link to an actual .ext I created. But you can see from that forum thread that somebody has reported that McAfee has falsely reported it as being a virus. I list the steps I took to create the .exe, the last being to run OCRA (One Click Ruby Installer). The problem might be something done within that, but I think there is a larger problems: anti-virus software does this to <i>many</i> small developers of .exe's So on the other extreme, perhaps a class action lawsuit is in order? Just sayin. Aforementioned forum post (containing link to .exe) is at: http://www.sencha.com/forum/showthread.php?150123-Windows-Desktop-App-using-Ruby-(instead-of-AIR) The .exe runs on Windows only