Sovereign communications · built on Matrix

Hisn

A citadel for your organization's communications.

Sovereign, end-to-end encrypted chat, voice and video that your organization actually owns — its own space, its own keys, its own server, in a datacentre you choose. From a free room for a small team to a fully isolated sovereign deployment for a ministry.

End-to-end encrypted Open standard · no lock-in Self-hosted on Kawkav Federates — or doesn't, by choice
Why Hisn

The communications room Blackberry left behind

Once, a serious institution ran its own messaging and held its own keys. That model didn't die because it was wrong — the vendor did. What replaced it moved every conversation onto someone else's cloud, in someone else's country, under someone else's subpoena. For a bank, a ministry, an NGO in a hostile state, that isn't a detail. It's the whole problem.

Sovereignty by design

Your conversations stay on infrastructure you control — your keys, your server, your choice of datacentre. Not a setting; the architecture.

Encrypted end to end

Every message, call and file is encrypted by default. Built on Matrix — the open standard trusted for state communications across Europe.

Run by people who run the estate

Kawkav already operates the servers, the datacentres in Madrid, Doha and Turkey, the identity and the provisioning. Hisn is that capability, packaged.

Architecture

One citadel, or a citadel each

Every organization is isolated. The question is how much — and it maps to price. Hisn offers both, on one ladder: the shared citadel for teams and businesses, a dedicated citadel for those who need total separation.

Shared citadel

Isolated zones on a hardened server

  • Your own private space with locked, invite-only rooms
  • Sign in with SSO; bring your own domain
  • Fast to start, affordable — ideal for teams and businesses
  • Powers the Community, Team and Business plans
Dedicated citadel

A whole homeserver, just yours

  • Your own server, database and encryption keys
  • Your own domain and admin, in the datacentre you choose
  • Total separation — a subpoena or breach reaches no one else
  • The Blackberry-BES model, reborn as the Sovereign plan
Plans

From a free room to a sovereign deployment

Every plan ships the same encrypted apps on web, desktop, iOS and Android. Prices are a starting frame — talk to us for volume and public-sector pricing.

Community
Small teams, NGOs and religious organisations — on request.
Freeup to 5 members
  • Private space + rooms
  • Group chat, voice & video
  • End-to-end encryption
  • SSO login, all apps
Request access
Team
Small organizations wanting their own branded space.
€19per month · up to 10
  • Everything in Community
  • Your own domain + branding
  • Single sign-on
  • Priority provisioning
Get Team
Business
Larger organizations with compliance and scale needs.
€49per month · up to 50
  • Everything in Team
  • Retention & moderation policy
  • Audit log
  • Priority support
Get Business
Flagship
Sovereign
Government, defence, finance, healthcare, sensitive NGOs.
From €199per month + setup
  • Your own dedicated server
  • Own database, keys & domain
  • Datacentre / residency choice
  • Compliance suite + SLA
Contact sales

Your communications, under your own flag.

Start free in minutes, or talk to us about a fully sovereign deployment in the datacentre of your choice.