Celtx actually has some great features for pre-production also. It helps in breaking the script down and getting everything organized for shooting. Plus it's collaboration features actually work. I used it in this years timed, faith based, screen writing competition "Write of Passage". My "Development Executive" was a Hollywood scrip analyst and he had never used celtx before, but by the end of the week he was amazed. To quote him, "wow, the collaboration feature actually works in Celtx, unlike the one in Final Draft." <grin>