On Linux, you can force a dark GTK theme (e.g., Adwaita-dark) for FileZilla via:
GTK_THEME=Adwaita:dark filezilla
But again, not perfect — some text becomes unreadable. filezilla dark theme upd
FileZilla, one of the most popular FTP clients, has finally introduced an official dark theme. No more eye strain during late-night file transfers. This update brings a modern, fully dark interface that matches your OS preference or can be manually enabled. On Linux, you can force a dark GTK theme (e
| Client | Native Dark Theme | Quality | |----------------|------------------|-----------------------------| | WinSCP | Yes | Excellent, system-aware | | Cyberduck | Yes | Full macOS + Windows dark | | FileZilla | No (Win/Linux) | N/A | | ForkLift (macOS)| Yes | Perfect | | Commander One | Yes | Good | But again, not perfect — some text becomes unreadable
FileZilla is now the only major FTP client without proper dark theme on Windows/Linux.