Download Sypher

Free, open core software for all supported platforms.

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Windows

Windows 7 and above (x86-64)

NSIS Installer (.exe) MSI Package (.msi)

Linux

x86-64 distributions

AppImage Debian Package (.deb)

Web

No install needed — served by your Sypher server

Server Setup Guide
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Previous Versions

System Requirements

Client (Desktop)

  • Windows 7+ or Linux (x86-64)
  • 2 GB RAM minimum
  • 100 MB disk space
  • WebGL-capable GPU (for voice diagnostics)

Server

  • Linux with Docker + Docker Compose v2+
  • 4 GB RAM recommended (2 GB minimum)
  • Domain name + ports 80, 443 open
  • Ports 3478, 7881 for voice (optional)