Syphon virtual screen by andreacremaschiThis project has been discontinued, and is no longer being maintained. Syphon Virtual Screen was an open source app to add a fake extra-display to your mac and pipe its video content to use in your video workflow. This could be used i.e. to hijack video output of applications that can go full-screen but are not Syphon-enabled. The project has been discontinued because of some recent changes in OSX
