WriterDuet Collaborative Screenwriting Software

Professional screenwriters rely on screenwriting tools to complete their work. WriterDuet is a software that allows multiple authors to outline, chat, and write together. Writers can write offline and auto-sync online. WriterDuet.com is already available online. But the developers are now working on a desktop version that works even when users are not online. The project is currently getting funded on Kickstarter. It does seem very useful for screenwriters.