4 Scriptwriting Tools

Fade In
Script-writing software with similar features toFinal Draft without the price tag. Not as many of the extras that come withFinal Draft but only $50. Windows, Mac, Linux.

Final Draft*
Industry standard for writing screenplays on both Windows and Mac. Notes section for keeping track of characters, special scene view to get an overview, index card system for summaries, etc. $170.

Trelby
Free script-writing alternative to Final Draft and Fade In. Enough features to get you started.

TV Tropes
Fiction writing help through examination of storytelling devices in creative works.