Everything your community needs.
Nothing they don't.
One platform. Self-hosted. No compromises on privacy or features.
Self-Hosted
Your server, your data. Deploy on your own hardware with Docker in minutes. No SaaS dependency.
End-to-End Encrypted
E2EE for DMs and optional per-channel encryption. X3DH key agreement with AES-256-GCM.
Cross-Platform
Native desktop apps for Windows and Linux. Web client with full feature parity. Mobile coming soon.
Modular Architecture
Enable only what you need. Channels, projects, inventory, moderation — toggle per workspace.
Real-Time Channels
Text, voice, and video in one place. 20+ markdown extensions, reactions, file attachments, and optional end-to-end encryption per channel.
Explore Channels
Project Management
Kanban boards and Gantt charts with task dependencies, assignees, and credits. Keep your team organized without leaving the platform.
Explore Projects
Events & Calendar
Schedule events with role-based signups, team rosters, capacity limits, and recurring support. Integrated calendar views keep everyone aligned.
Explore EventsSecurity isn't a feature.
It's the foundation.
Every layer of Sypher is designed with zero-trust principles.
ABAC Permissions
Attribute-based access control with deny-wins semantics and scope chains from server to individual channels.
Device-Bound Identity
EdDSA signing keys, install UUIDs, and Argon2id password hashing. Every device is uniquely verified.
Federation
Server-to-server communication with Ed25519 HTTP signature verification and configurable trust tiers.
Ready to own your platform?
Deploy Sypher on your own server in under 10 minutes. Free, open core, no strings attached.