What is Tresorit for?
End-to-end encrypted file storage and sharing for teams that need confidentiality while still collaborating.
Citadel vs Tresorit
Tresorit and Citadel do different jobs.
Tresorit is encrypted collaboration. Citadel is a vault with no collaboration at all.
What is Citadel for?
Protecting and archiving high-value information: board papers, IP, legal files, financial records, source code and private keys. It is a vault, not a workspace.
Do you need both?
Usually, yes. Most organisations keep Tresorit for everyday work and move their crown-jewel data into Citadel, where there is no sharing surface at all.
An honest comparison.
Tresorit is a capable product and we are not going to pretend otherwise. It is designed for productivity, and it is good at it.
Citadel is designed for containment. It has no sharing, no links, no guests and no sync client, because every one of those is a route out. Those absences would be flaws in a collaboration tool. In a vault they are the point.
Where the protection differs.
Mainstream platforms protect data with encryption and access controls: an algorithm, a key and a permission model. That is a reasonable design, and it rests on the key staying secret.
Citadel adds Secured2's physics-based Quantum-Secure® protection. Files are reduced, separated into fragments with no independent meaning, and distributed, so no single location holds a complete, readable file.
Tresorit and Citadel side by side
| How they compare | |
|---|---|
| Primary purpose | Tresorit: encrypted collaboration. Citadel: protected archive. |
| Sharing | Tresorit: encrypted sharing and links. Citadel: none. |
| Protection model | Tresorit: end-to-end encryption with keys. Citadel: keyless, physics-based protection. |
| Long-term risk | Tresorit: ciphertext ages with the algorithm. Citadel: fragments do not become meaningful over time. |
| Best used for | Tresorit: confidential work in progress. Citadel: crown jewels at rest. |
Questions people ask
- Can I use both?
- Yes. Many organisations collaborate in an encrypted tool and archive the finished, sensitive result in a vault.
- Does Citadel support external recipients?
- No. Anything that lets a file reach a third party is outside the vault model.
- Is Citadel harder to use?
- No. Drag, drop, store, retrieve. There is simply less to configure.
Keep reading
Citadel by Secured2
Keep working where you work. Vault what you cannot lose.
Citadel sits alongside the tools your teams already use, and takes responsibility for the files that must never leak.