About Sigma File Manager
Overview
Sigma File Manager is a free, open-source desktop file manager for Windows and Linux, designed, developed, and maintained by Aleksey Hoffman. Version 2 left beta and became the stable main branch, and the app ships through Winget, the Microsoft Store, Flatpak, and Snapcraft.
The app pairs a tabbed, browser-style interface with a global search engine that scans a full 1TB drive in about two seconds and corrects typos, wrong case, word order, and missing file extensions. Users split a tab into two panes, preview files in place, tag and filter folders, and extend the interface through the built-in extension marketplace.
Key Benefits
- Find files across a full 1TB drive in roughly two seconds, even with typos or a missing extension.
- Replace File Explorer on Windows for most everyday file actions, including copy, move, and drag and drop.
- Share or stream folders over the local network with browser access, QR codes, and FTP support.
- Add commands, pages, shortcuts, and settings through extensions installed from the built-in marketplace.
- Narrow large folders with glob patterns and property filters for size, dates, and MIME type.
- Install from Winget, the Microsoft Store, Flatpak, or Snapcraft, then update from inside the app.
How It Works
Users install Sigma through Winget, the Microsoft Store, Flatpak, Snapcraft, or a portable AppImage, then optionally set it as the default file manager. Navigation runs through an address bar with path autocomplete, keyboard shortcuts, and a command palette that lists app and extension commands. A search field queries the global index, the Space key previews the selected file, and users install extensions from the marketplace when they need extra tools such as video downloading or media conversion.
Use Cases
- Windows power users swap File Explorer for a tabbed browser with split panes, tags, and quick previews.
- Developers browse detected WSL distributions and connect to SSHFS, NFS, SMB, and CIFS locations.
- Small teams and households share or stream folders over the local network and open them in a browser or by QR code.
- Media editors and archivists filter large folders by size, date, MIME type, and glob patterns, then tag items for later.
- Extension developers ship commands, pages, shortcuts, and settings that run inside the app.
- Translators localize the interface for most widely used languages.
Why Choose This Product
Sigma File Manager separates itself with a search engine tuned for large local drives, a plugin system with its own marketplace, and free distribution across four package channels plus a signed Windows build. Users who need stable remote network mounting should know that network locations remain in alpha, and Apple users must build the app from source because the project provides no macOS binaries.
Sigma File Manager Pros & Cons
- Free and open-source with a published license and privacy policy
- Global search scans a 1TB drive in about two seconds with typo correction
- Install packages for Winget, Microsoft Store, Flatpak, and Snapcraft
- Built-in extension marketplace for extra commands and pages
- LAN sharing with browser access, QR codes, and FTP
- Network locations (SSHFS, NFS, SMB, CIFS) are still in alpha stage
- macOS is supported but the project provides no macOS builds
- Linux portable AppImage is labeled experimental
- Unsigned Windows installer may trigger antivirus warnings
Key Features
Smart Global Search
Searches a full 1TB drive in about two seconds and corrects typos, wrong case, word order, missing words, and missing file extensions.
Tabs and Split View
Keeps multiple directories open in tabs and splits any tab into two independently navigable panes for transferring files.
Extension Marketplace
Installs extensions from a built-in marketplace or local folders that add commands, pages, shortcuts, and settings.
LAN File Sharing
Shares or streams files and folders over the local network with browser access, QR codes, and FTP support.
Network Locations
Connects to remote locations such as SSHFS, NFS, SMB, and CIFS, a capability the project still labels alpha.
Glob Item Filter
Narrows large folders with glob patterns and property filters for size, dates, MIME type, and more.
Command Palette
Runs most actions by keyboard with global shortcuts and a fast palette for app and extension commands.
Quick View Previews
Previews images, videos, audio, PDFs, and text files with the Space key and moves through files without external apps.
Tags and Dashboard
Organizes files with tags and gathers favorites, tagged files, most visited locations, and history in one panel.
WSL Drive Browsing
On Windows, browses detected WSL distributions directly inside the file navigator.
Frequently asked questions about Sigma File Manager
Is Sigma File Manager free?
Yes. The project describes Sigma File Manager as a free, open-source file manager, and the source code is available in the GitHub repository with a license file, contribution guide, and privacy policy included.
Which operating systems does Sigma File Manager support?
It targets 64-bit Windows and Linux. macOS is supported in the codebase, but the project does not provide macOS builds, so Mac users must compile the app from source.
How do I install Sigma File Manager on Windows or Linux?
On Windows, run winget install sfm, use the Microsoft Store listing, or install the unsigned .exe. On Linux, install the Flatpak package, use sudo snap install sigma-file-manager --edge, or run the portable AppImage.
How fast is the search?
The smart global search finds files and folders in seconds and scans a full 1TB drive in about two seconds. Its typo correction handles typos, wrong case, wrong word order, missing words, missing symbols, and missing file extensions.
Can Sigma replace Windows File Explorer?
On Windows, Sigma can replace File Explorer for most everyday file actions, so users handle browsing, copying, moving, and previewing from the same app.
Can I share files over my local network?
Yes. Sigma shares or streams files and folders over the local network, with browser access, QR codes, and FTP support, and it can connect to remote locations such as SSHFS, NFS, SMB, and CIFS while that capability remains in alpha.