Hex Citadel review
A privacy-focused self-hosted storage option for technical teams comfortable managing infrastructure.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Hex Citadel is an open-source cloud file synchronization service for people and organizations that want control over their storage infrastructure. It is aimed at technical users who can operate a self-hosted environment and want client-side encryption, open-source code, and direct control over storage. Access is available through the web and a macOS desktop client, while mobile support is deferred until after version 1.0.
Its strongest distinction is the combination of privacy architecture and deployment flexibility. Files are encrypted on the client with AES-256-GCM before upload, and the zero-knowledge server architecture is designed to keep the server from holding readable file contents. Docker deployment, PostgreSQL support, and S3-compatible backends—including MinIO and AWS S3—let organizations align the service with existing infrastructure. Synchronization uses Rabin chunking and zstd compression, while full data export and standard file formats support portability.
The Self-Hosted plan includes all features, unlimited users, unlimited storage on your hardware, end-to-end encryption, full source code access, and community support at no charge. The Hosted plan is intended for organizations that prefer managed infrastructure, automatic updates and backups, end-to-end encryption, priority support, and no server management. That makes Hex Citadel a strong fit for technical teams prioritizing control and privacy over broad client coverage or a fully established product lifecycle. Teams that require mobile access now, or prefer a mature hosted service with immediate availability, should consider alternatives.
Hex Citadel pros and cons
- Where it wins
- Client-side AES-256-GCM encryption with zero-knowledge architecture
- Docker deployment with S3-compatible storage and PostgreSQL support
- Free Self-Hosted plan includes all features and unlimited storage on your hardware
- Where it doesn't
- Mobile support is deferred until after version 1.0
- The project is in active development
- Hosted deployment is announced as coming soon
Hex Citadel fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update