Sefaly
Sefaly is a cloud storage service for files encrypted end to end, with encryption performed in the browser before upload.
What Sefaly is
Sefaly is a cloud storage service for files encrypted end to end, with encryption performed in the browser before upload. It uses AES-256-GCM for file encryption and wraps per-file keys with ML-KEM-768. Sefaly says its servers store ciphertext and cannot decrypt files; its privacy policy says it collects account and file metadata but not plaintext passwords or unwrapped private keys. The service lists PBKDF2-SHA256 with 600,000 iterations for key derivation and Argon2id for password hashing. Sefaly is available on the web, Windows, macOS, and Linux. Its CLI supports file upload, download, management, and sharing on those desktop platforms. Users can make expiring public links with download limits or share directly with Sefaly users; folder sharing is in the web app. The CLI supports chunked transfers for files over 256 MB, with a stated format ceiling of around 312 GB per file. The Free plan includes 2 GB of storage and a 100 MB maximum file size. Pro costs $9.99 a month for 1 TB; Pro Plus costs $19.99 a month for 2 TB.
Good
- Browser-based AES-256-GCM file encryption
- Per-file keys wrapped with ML-KEM-768
- CLI supports uploads, downloads, management, and sharing
- Free plan includes 2 GB of storage
- Paid plans have no file-size limit
Watch out
- Free plan limits files to 100 MB
- Folder sharing is only in the web app
- Pro costs $9.99 a month
- Pro Plus costs $19.99 a month
Who it suits
Sefaly may suit people looking for encrypted cloud storage with browser-based encryption and desktop CLI access. The Free plan has a 100 MB file-size limit, while paid plans remove that limit and provide more storage.
Verdict
Sefaly combines browser-side encryption with web, desktop, and CLI access. Compare the Free plan’s file-size cap with the larger storage and unlimited file sizes on its monthly paid plans.
Plans and prices
From Sefaly's own pricing page, checked 10 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 2 GB secure storage · 100 MB max file size · End-to-end encryption · Post-quantum security (ML-KEM) · Browser-based encryption · Email support · Billed monthly • Cancel anytime |
| Pro | $9.99 a month | 1 TB secure storage · No file size limit · End-to-end encryption · Post-quantum security (ML-KEM) · Browser-based encryption · Priority email support · Advanced sharing controls · Billed monthly • Cancel anytime |
| Pro Plus | $19.99 a month | 2 TB secure storage · No file size limit · End-to-end encryption · Post-quantum security (ML-KEM) · Browser-based encryption · Priority support (24/7) · Advanced sharing controls · Billed monthly • Cancel anytime |
The facts
Each one read from Sefaly's own pages, with the date it was checked.
What it does
- CLI
- Sefaly provides a terminal CLI for file upload, download, management, and sharing on Windows, macOS, and Linux.checked 10 Oct 2026
- CLI limit
- The CLI page says folder sharing is available in the web app for now.checked 10 Oct 2026
- Crypto details
- The site lists PBKDF2-SHA256 with 600,000 iterations for key derivation and Argon2id for password hashing.checked 10 Oct 2026
- Encryption
- Files are encrypted in the browser with AES-256-GCM before upload, and per-file keys are wrapped with ML-KEM-768.checked 10 Oct 2026
- Infrastructure
- The privacy policy names Vercel for hosting, Neon for managed PostgreSQL, Cloudflare R2 for encrypted blobs, and Stripe for payment processing.checked 10 Oct 2026
- Key privacy
- Sefaly says its servers store ciphertext and cannot decrypt users’ files.checked 10 Oct 2026
- Large files
- The CLI supports chunked uploads and downloads for files over 256 MB, with the page stating a format ceiling of around 312 GB per file.checked 10 Oct 2026
- Privacy
- The privacy policy says Sefaly collects account and file metadata, but does not receive plaintext passwords or unwrapped private keys.checked 10 Oct 2026
- Product
- Sefaly is a quantum-safe end-to-end encrypted cloud storage service.checked 10 Oct 2026
- Sharing
- The CLI supports public share links with expiration and download limits, and direct shares to Sefaly users; folder sharing remains in the web app.checked 10 Oct 2026
- Support
- The pricing page lists email support on Free, priority email support on Pro, and 24/7 priority support on Pro Plus.checked 10 Oct 2026
- Trust and safety
- Because file contents are end-to-end encrypted, Sefaly says it cannot proactively scan them and instead acts on account metadata and submitted reports.checked 10 Oct 2026
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