Windows XP, Server 2003, Vista 32-bit and 64-bit, and 7 32-bit and 64-bit.
Mac compatability:
Mac OX 10.4.x
Linux compatability:
Linux kernel 2.2.14 or higher, Gnome
CeltX is a powerful scriptwriting program, very useful for writing brickfilm scripts. It includes a wide variety of scriptwriting features, including storyboarding , professional screenplay capability, and script breakdown.