# winfsp/winfsp

Windows File System Proxy - FUSE for Windows

Repository: https://github.com/winfsp/winfsp
Canonical: https://ross.abutalabs.com/products/winfsp
Homepage: https://winfsp.dev
Language: C
License: NOASSERTION
License Family: other
Topics: fuse, filesystem, windows, kernel, windows-kernel, driver, gplv3
Last push: 2026-08-03T14:41:11+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 95, release rhythm 8, longevity 100
- inputs: {"age_days": 3759, "days_push": 30, "days_rel": 454, "gap_med": null, "n_releases_24m": 1}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8828, forks 619 (observed 2026-08-28T04:10:25.907009+00:00)

## What it is
WinFsp is a Windows platform providing a kernel-mode file system driver and user-mode DLL that lets developers implement custom file systems as user-mode programs, similar to FUSE on Linux. It exposes native Windows, FUSE, and Cygwin APIs for C/C++ and .NET.

## Use cases
- mount remote storage as a Windows drive
- write a custom file system for Windows without kernel programming
- port FUSE file systems from Linux to Windows
- expose an archive or database as a virtual drive
- implement SSHFS on Windows

## When to choose
- you need to create a Windows file system in user mode
- you want FUSE compatibility on Windows
- you need NTFS-like performance and semantics for a virtual file system

## When to avoid
- you target Linux or macOS only
- you need a pure kernel-mode file system with no user-mode component
- your project cannot accept GPLv3 terms and you cannot purchase a commercial license

## Facets
- artifact type: library
- maturity: stable
- function: file-system, sdk, developer-tools
- domain: files, developer-tools, operating-systems
- platform: windows, cpp, c, dotnet
- tags: fuse, kernel-driver, user-mode-filesystem, windows-kernel, sshfs

## Member repositories
- winfsp/winfsp (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:25.907009+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:24:50.296839+00:00, confidence not recorded.
  - readme: https://github.com/winfsp/winfsp (fetched 2026-08-28T04:10:25.907009+00:00, sha 085176165818)
  - homepage: https://winfsp.dev (fetched 2026-08-29T08:25:12.371545+00:00, sha c11947d23855)
  - site_page: https://winfsp.dev/doc (fetched 2026-08-29T08:25:12.374213+00:00, sha 118a1989d398)
- Data as of 2026-08-30T08:39:29.467469+00:00.