We get questions often about the best software to write with. Yes, Final Draft is the 800-pound-gorilla of screenwriting, but there are other alternatives. Making PDF files is what’s important! And some software (like Highland and WriterDuet) will import and export Final Draft’s FDX format as well.
My favorite free apps are TRELBY for PC users and HIGHLAND 2 for Mac users. See more options, with links to their sites, at