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Sigma File Manager vs Spacedrive: catalog facts
Sigma File Manager	Spacedrive
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free to download and use. The source is published but under a source-available licence…
Windows, Linux	Windows, macOS, Linux
Its global search indexes a large drive in seconds, and the dual-pane split view and media previews are…	Every file gets a content hash, so the same file on two machines is recognised as one item…
It is an Electron application maintained by one developer, so it is heavier than a native file manager.	The Functional Source License is source-available rather than open source, and the project is still pre-release and…
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License: FSL-1.1-ALv2
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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