Graphene Cloud Explorer

Graphene Cloud Explorer is a privacy-first cloud file explorer for secure upload, download, and file management.

The app is built on zero-knowledge, client-side encryption: files are encrypted on your device before upload, and we do not receive your passphrase, encryption keys, or plaintext file content. Our provider-blind, zero-trust architecture is designed to minimize trust in any single party and reduce data exposure.

Explorer capabilities:

Upload and download files securely

Browse, open, and manage cloud-stored files

Access files across desktop, mobile, and web clients

On-demand file operations

Security and privacy highlights:

Client-side encryption before transfer

No provider key access or key custody

Filename obfuscation and minimized metadata visibility

Strong hash-based key derivation with 512-bit derived key material

Open-source code for public review and independent verification

Platform availability:

Desktop: Windows, macOS, Linux

Mobile: iOS, Android

Web: browser-based encrypted explorer

Early Access offer:

New users can start with 100 GB free (no credit card required). This limited Early Access Beta offer may end when free-user capacity is reached. Early Access users keep 100 GB free while Graphene Cloud remains in operation. Beta service is provided as-is and temporary issues may occur.