Trelby

A free, multiplatform, feature-rich screenwriting program! Trelby is simple, fast, elegant, and infinitely configurable. Trelby is free software licensed under the GPL Version 2.0.

It can, but not limited to: import multiple formats such as plain text, trelby, fountain, or final draft files, proper formatting PDF export along with listed imports as export, very precise reporting and name database, as well as multiple viewing modes such as draft or WYSIWYG.