Here are some free screenplay
software: Movie Magic Screenwriter, Final Draft, and Sophocles.
These programs offer free downloads for demo purposes only.
Movie Magic Screenwriter so far has the most capabilities as shown on
their page that compares their program with Final Draft and Hollywood
Screenplay. But if all you want is something to simply format your
script, then Sophocles or the other programs that are compatible with
word processing are probably what you need.
Whatever your priorities are as you research these programs, at least
they provide free demos and by doing this, they allow you to make an