Download QNSQY
Get QNSQY for your platform. Both GUI and CLI included in every download. No installation required — single portable executable.
GUI
Graphical interface for easy drag-and-drop encryption
CLI
Command-line interface for scripting and automation
Portable
No installation required. Run from anywhere.
Offline
Zero network access. Works completely air-gapped.
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macOS
Universal (Intel + Apple Silicon)
SHA-256 Checksums
a1b2c3d4e5f6... qnsqy-free-win-x64.exe b2c3d4e5f6a7... qnsqy-free-win-x64.zip c3d4e5f6a7b8... qnsqy-free-macos-universal.dmg d4e5f6a7b8c9... qnsqy-free-macos-arm64.tar.gz e5f6a7b8c9d0... qnsqy-free-macos-x64.tar.gz f6a7b8c9d0e1... qnsqy-free-linux-x64.tar.gz a7b8c9d0e1f2... qnsqy-free-linux-arm64.tar.gz b8c9d0e1f2a3... qnsqy-free_1.0.0_amd64.deb c9d0e1f2a3b4... qnsqy-free-1.0.0.x86_64.rpm
Installation
Windows
# Option 1: Run the installer Download and run qnsqy-free-win-x64.exe # Option 2: Extract ZIP and add to PATH Extract qnsqy-free-win-x64.zip Add the folder to your system PATH # Verify installation > qnsqy-free version
macOS
# Option 1: Use the DMG installer Open qnsqy-free-macos-universal.dmg Drag QNSQY to Applications # Option 2: Install from tarball $ tar -xzf qnsqy-free-macos-arm64.tar.gz $ sudo mv qnsqy-free /usr/local/bin/ # Clear quarantine (if needed) $ xattr -d com.apple.quarantine /usr/local/bin/qnsqy-free # Verify installation $ qnsqy-free version
Linux
# Debian / Ubuntu $ sudo dpkg -i qnsqy-free_1.0.0_amd64.deb # Fedora / RHEL / CentOS $ sudo rpm -i qnsqy-free-1.0.0.x86_64.rpm # From tarball $ tar -xzf qnsqy-free-linux-x64.tar.gz $ sudo mv qnsqy-free /usr/local/bin/ $ sudo chmod +x /usr/local/bin/qnsqy-free # Verify installation $ qnsqy-free version
Quick Start
# Encrypt a file (creates secret.pdf.qs) $ qnsqy-free encrypt -i secret.pdf Enter password: ******** Confirm password: ******** Encrypted: secret.pdf.qs # Decrypt the file $ qnsqy-free decrypt -i secret.pdf.qs Enter password: ******** Decrypted: secret.pdf # Securely delete the original $ qnsqy-free shred secret.pdf Shredding secret.pdf (3 passes)... File securely deleted.
Verify Your Download
Always verify downloads before installing. This protects against tampering and ensures you have the authentic binary.
# Linux / macOS $ sha256sum qnsqy-free-linux-x64.tar.gz # Windows (PowerShell) > Get-FileHash qnsqy-free-win-x64.exe -Algorithm SHA256 # Compare output with checksums above
System Requirements
Windows
10 / 11
64-bit (x64) required
macOS
11.0+
Big Sur or later. Intel and Apple Silicon.
Linux
glibc 2.31+
Ubuntu 20.04+, Fedora 32+, Debian 11+
Memory
256 MB
More recommended for large files
Disk Space
50 MB
Plus space for encrypted files
Network
None
Works completely offline
Coming Soon
Additional platforms and package managers in development:
FreeBSD
Homebrew (macOS)
AUR (Arch Linux)
Snap
Flatpak
Windows Package Manager (winget)
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