CFS 0.5 Stable Windows x64

CFS: Editable compressed files for Windows.

CFS 0.5.0 Stable is the supported Explorer-first release for Windows 11. It creates, opens, edits, and optimizes .cfs archives stored on local NTFS volumes.

Download 0.5.0 Stable Read what CFS is

48.4 MiBWindows 11 x64Explorer-first

Direct Windows installer

Download CFS 0.5.0 Stable.

This is the sole supported installer. Versions 0.1.0 through 0.4.0 have been withdrawn because of known bugs and are not offered for download.

CFS 0.5.0Stable releaseWindows 11 x64 · 48.4 MiBDownload setup

CFS 0.1–0.4WithdrawnOlder releases are unsupported because of known bugs.No installer offered

A focused Windows workflow

From folder to compressed archive—and back.

Create or open in Explorer

Use Create empty CFS archive here, Compress to CFS, or double-click an archive. The management app is not required.

Mount in Explorer

Browse projected files through Windows Explorer without first extracting the entire archive.

Save and unmount

Save supported changes back into the archive, validate it, and close the mounted folder cleanly.

Stable release

One supported CFS installer.

Stable0.5.0 Stable

CFS 0.5.0 Stable

The supported Explorer-first release for creating, opening, editing, saving, and optimizing CFS archives.

Download 0.5.0 Stable

Status: Stable
Architecture: x64
Size: 48.4 MiB

Checksums Release notes ↗

Self-signed Windows setup

The installer is Authenticode-signed with a self-signed certificate. The first launch can still show Unknown Publisher or Microsoft Defender SmartScreen.

Withdrawn0.1.0–0.4.0

Older CFS releases

All pre-0.5 installers have been withdrawn because of known bugs. They are unsupported and no longer offered for download.

Status: Withdrawn
Support: None
Installer: Not offered

Already using an older release?

Keep backups, stop using it for important archives, and move to 0.5.0 Stable.

Release availability

CFS 0.5.0 Stable is the only supported release and the only installer offered here.
Release	Status	What to know
0.5.0 Stable Current	Supported for Windows 11 x64 and writable archives on local NTFS storage.	Keep independent backups and verify the published SHA-256 before setup.
0.1.0–0.4.0 Withdrawn	Unsupported because of known bugs.	No older installer or fallback release is offered.

Stable support scope

Built for Windows 11 x64 PCs.

Windows 11
64-bit Windows
Local NTFS storage for writable archives
Windows Projected File System for Explorer mounting

CLIENT-PROJFS

Explorer mounting uses Windows Projected File System.

Setup checks the Windows feature and may require a restart. CFS reports clearly when ProjFS is unavailable.

Verify before you run

One published hash. Zero silent installs.

SETUP SHA-256

b89a650b96e3dfe981a28b2ff13888cbfef30ec8873f2af77955a1ead98fb46a

PowerShellGet-FileHash .\CFS-0.5.0-Stable-Setup.exe -Algorithm SHA256

Consent-first updates

CFS checks a public HTTPS manifest, notifies you about newer releases, verifies the downloaded setup hash, and asks again before requesting administrator approval. It never performs a silent update.

Release information

Stable within a focused support scope.

Use CFS 0.5.0 on Windows 11 with writable archives on local NTFS storage. Keep independent backups: CFS compresses files but does not encrypt them.

Read 0.5.0 release information

REPORT A PROBLEM

Found a reproducible bug?

Open the public issue tracker with your CFS build, Windows version, exact steps, and privacy-reviewed diagnostic logs.

Open GitHub Issues