Plotbot is web-based screenwriting software. You can write your script with as many or as few people as you want—there's nothing to install, it's free, and it's easy to use! Try our demo:

With Plotbot, you can create private screenplays to work alone or with invited friends, or you can create public screenplays to find new friends. All changes are tracked to each writer, and you can revert to prior versions at any time.

We handle all of the formatting—you just click the text to edit and write, easy as pie. All you have to think of are great ideas!