Compare software

Trelby vs Fade In: catalog facts
Trelby	Fade In
Free Free software under the GPL.	Paid A paid licence is bought from the developer's website.
Linux	Windows, macOS, Linux
Enforces correct screenplay formatting and pagination Imports and exports Final Draft and Fountain files	Automatic industry-standard screenplay formatting Tools for outlining, organizing and navigating a script
Interface built with wxPython looks dated next to commercial tools No collaboration or cloud sync features mentioned	Paid software with no free tier described Focused on scripts, so not a general-purpose word processor
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.