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Q-Dir vs Fileside: catalog facts
Q-Dir	Fileside
Free Free for private use. Commercial use requires a donation licence.	Paid Paid licence with a free trial.
Windows	Windows, macOS
Four panes at once makes multi-folder sorting quick Tiny portable executable	Tiled multi-pane layouts saved per project Keyboard palette for jumping between folders
Licence is free for private use; commercial use requires a donation licence Interface is cramped and dated	Paid after the trial No Linux version
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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