Sigma File Manager is a cross-platform desktop application for browsing, organizing, and searching local and network files through a modern graphical interface. It functions as an integrated file previewer, network storage client, and local network file share utility.
The application is built on an extensible architecture that allows users to add custom commands, pages, and settings through a plugin system and marketplace. It distinguishes itself with the ability to stream local files and folders to other devices over a local network using browser access, QR codes, and FTP.
Core capabilities include mounting remote directories via protocols such as SSHFS, NFS, SMB, and CIFS, as well as a typo-tolerant global search system for locating files across large storage volumes. The interface supports split-pane views for file synchronization and an integrated viewer for rendering images, videos, PDFs, and text files without launching external applications.
Users can personalize the visual experience through transparency effects, blend modes, and a centralized favorites dashboard.