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WriterSolo vs Trelby: catalog facts
WriterSolo	Trelby
Free The listed WriterSolo version is free.	Free Free software under the GPL.
Linux, Web	Linux
Works with Final Draft FDX and Fountain formats Exports scripts to PDF and other formats	Enforces correct screenplay formatting and pagination Imports and exports Final Draft and Fountain files
Does not include collaboration features	Interface built with wxPython looks dated next to commercial tools No collaboration or cloud sync features mentioned
Downloadable app, 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 8, 2026	Official website Full listing and sources Checked October 1, 2026

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