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Spacedrive vs Sigma File Manager: catalog facts
Spacedrive	Sigma File Manager
Free Free to download and use. The source is published but under a source-available licence…	Free The software is free under its open-source licence. Hosting, hardware and external…
Windows, macOS, Linux	Windows, Linux
Every file gets a content hash, so the same file on two machines is recognised as one item…	Its global search indexes a large drive in seconds, and the dual-pane split view and media previews are…
The Functional Source License is source-available rather than open source, and the project is still pre-release and…	It is an Electron application maintained by one developer, so it is heavier than a native file manager.
Downloadable app	Downloadable app
Closed source	Open source
License: FSL-1.1-ALv2	License: GPL-3.0
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.