The Best Cloud Backup for Windows

When searching for the best cloud backup for Windows, most users expect a heavy app that slows down their system. Traditional Electron-based apps like Dropbox or Google Drive often consume 800MB+ of RAM. QuixiCloud breaks this mold entirely.

Built in Rust and Tauri (using WebView2), QuixiCloud idles at a mere 20-40MB of RAM. This makes it undeniably the best cloud backup for Windows users who want blazing speed and memory safety without sacrificing PC performance.

Files On-Demand: Zero Disk Space Used

One of the standout features that makes QuixiCloud the best cloud backup for Windows is its deep integration with the Windows Cloud Files API (cfapi). With "Files On-Demand," your entire cloud drive is visible in File Explorer, but files take up 0 KB of local disk space until you open them.

You get native File Explorer context menus. Simply right-click any file to select "Always keep on this device" for offline access, or "Free up space" to send it back to the cloud.

Secure and Blazing Fast

QuixiCloud uses Tokio for multi-part parallel chunked uploads, easily saturating your upload bandwidth. Your data is protected by a client-side encryption pipeline (AES-CTR, SHA-256) and local metadata is securely stored in an encrypted SQLite (SQLCipher) database. Secure, lightweight, and fast—QuixiCloud is the premier choice for Windows users.

Protect Your Data Automatically

Don't wait for a hardware failure or a ransomware attack. Learn more about QuixiCloud Automatic Backup and secure your devices with our 60-day ransomware recovery and enterprise ZFS architecture.