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.