colossi.app is how the members of the Human Colossus Foundation work and communicate every day. We don’t just talk about the Dynamic Data Economy — we live in it. Identity, conversations, calendars, documents and the people you trust, all under your control. Join us, and you can live in it too.
The Dynamic Data Economy gives individuals back their data — and colossi.app is where HCF members put that into practice. Our messages, mail, meetings, tasks and documents all flow through it, on infrastructure that answers to each of us instead of a platform. Every member gets the same tools we use ourselves.
Self-Certifying Identifiers and verifiable credentials, built on open protocols. KERI gives you identifiers whose keys only you control and whose history anyone can verify; ACDC (Authentic Chained Data Containers) turns claims about you into credentials whose origin and chain of trust can always be checked; OCA gives them a shared, machine-readable meaning. Sign in everywhere without ever handing your identity to a platform.
End-to-end encrypted conversations across people and communities, powered by Mesaĝkesto — our open protocol for platformless communication. Messages travel directly between the identities you trust, with no platform in the middle to own, read or lock in your conversations. Portable across devices, never mined for ads.
A real inbox built on open standards, with cryptographic provenance baked in. Every sender is verifiable, so spam has nowhere to hide — and every message carries proof of who sent it and when, making it fit for formal exchanges that would otherwise need registered post. Your address, your archive, your rules.
Schedules that travel with you across organisations. Share availability, not your whole life — and revoke it any time.
A contacts graph you actually own. Connections, consent and shared history — encoded as data you control, not a CRM lock-in.
Personal and shared work, kept in your vault. Assign, attribute and audit — with the same identity you use everywhere else.
Share data with the people and organisations you choose — and decide exactly how they may use it. Access stays under your control, secured end to end, with no platform in the middle and every grant revocable at any time.
The Colossi network is run by the Human Colossus Foundation as part of its mission to build open, individual-first digital infrastructure. Access to colossi.app is not sold separately — it is part of HCF membership. Become a member, get your account on the network, and start living the Dynamic Data Economy alongside us.
