A Tresorit alternative focused on secure sending and intake
Tresorit is a mature, genuinely end-to-end encrypted product — built mostly for encrypted storage and sync. If what you actually need is to send files and collect documents securely rather than run a full encrypted cloud drive, KyberCrypt is purpose-built for that, adds post-quantum encryption, and starts free.
Same commitment to encryption, a different job
Credit where it's due: Tresorit's end-to-end encryption is the real thing. The question is whether you need a full sync-and-storage suite or a focused secure-transfer and client-intake tool. KyberCrypt does the latter — send by email or username, collect files through encrypted request links, burn after download — and layers on hybrid post-quantum cryptography that classical E2E products don't yet advertise.
| Tresorit | KyberCrypt | |
|---|---|---|
| Primary focus | Encrypted storage & sync | Secure send + file intake |
| Encryption | End-to-end (classical) | Hybrid post-quantum: ML-KEM-768 + X25519, AES-256-GCM |
| Post-quantum | Not advertised | Yes, on every transfer |
| Client-intake / request links | Yes | Yes — with a zero-knowledge, browser-side-encrypted option |
| Burn after download | Manual/expiry | Yes — automatic |
| Free tier | Trial-oriented | Yes |
Built for confidential exchange, priced to start free
If your team handles sensitive documents — legal, finance, healthcare — and you want post-quantum encryption, a simple send/intake workflow, and pricing that doesn't require a sales call to try, KyberCrypt is worth a look alongside Tresorit.
Post-quantum encrypted file transfer. Free plan, no card required.