Team communication where the server knows nothing.
Most team messengers store your data for audit. We don't. Every team gets a dedicated instance. Every message is encrypted on-device. The server handles ciphertext. Nothing more.
Dedicated instance. End-to-end encryption. Messages that vanish on your schedule.
Every team gets its own isolated server. No shared infrastructure, no noisy neighbours. Your data runs in a standalone environment — included on every plan.
One-on-one and group conversations, all end-to-end encrypted. Raw text never leaves the device — the server only handles ciphertext. Organize channels by team, project, or topic.
GDPR-ready by architecture. Data residency is the user's device, not the server. Configurable retention policies and auto-purge give your legal team one less thing to worry about.
One-on-one and group voice calls routed through encrypted channels. No third-party relay. Your audio stays inside the secure perimeter.
Granular access control on document hubs and channels. Admin, member, guest — each with configurable read, write, and share rights.
Team-wide file tree and shared notes with role-based access control. Documents are encrypted and organized by project — only the right people see the right files.
A frontier LLM deployed exclusively on your instance. Accelerate your team's output without a single prompt leaving your perimeter. No external APIs. No model training on your data. Ever.
Desktop and mobile apps with seamless session sync. Link multiple devices to one identity, or share a device across team members with isolated encrypted profiles.
Traditional team messengers store messages in plaintext databases on shared infrastructure. Blackbox stores only ciphertext on your dedicated instance — raw data exists only on user devices.
Pick a plan, get a voucher, share the code with your team. That's it.
Leave your details and we'll set up a private Blackbox channel for your organization.