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Afterwriting vs Trelby: catalog facts
Afterwriting	Trelby
Free Used in the browser with no pricing shown on the site.	Free Free software under the GPL.
Web	Linux
Converts Fountain scripts to formatted PDF Produces statistics about a screenplay	Enforces correct screenplay formatting and pagination Imports and exports Final Draft and Fountain files
Only handles Fountain input Not an editor for writing the script itself	Interface built with wxPython looks dated next to commercial tools No collaboration or cloud sync features mentioned
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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