Spectrum 2

Self-Hosted

Open-source XMPP gateway for cross-network communication

Overview

Spectrum 2 is an open-source XMPP transport that enables cross-network communication between XMPP users and those on non-XMPP platforms like IRC, Telegram, Signal, and WhatsApp. It acts as a gateway, translating messages, presence updates, and media across protocols. Deployable via Docker or source, it integrates seamlessly with popular XMPP servers (Prosody, ejabberd) to extend your communication stack. Ideal for self-hosted environments, it prioritizes privacy, data control, and extensibility via plugins for new protocols.

Self-Hosting Resources

Find Official Image on Docker Hub View Source & Docs

Below is a reference structure for docker-compose.yml. ⚠️ Do NOT run blindly. Replace placeholders with official values.

docker-compose.template.yml TEMPLATE


version: '3'
services:
  spectrum_2:
    image: <OFFICIAL_IMAGE_NAME>:latest
    container_name: spectrum-2
    ports:
      - "8080:<APP_INTERNAL_PORT>"
    volumes:
      - ./data:/app/data
    restart: unless-stopped

Key Features

Cross-protocol XMPP gateway (supports IRC, Telegram, Signal, etc.)
Seamless integration with XMPP servers like Prosody and ejabberd
Docker-friendly deployment for simplified setup
Extensible plugin architecture for adding new protocols

Frequently Asked Questions

? Is Spectrum 2 hard to install?

Spectrum 2 offers flexible deployment options—Docker images simplify setup for most users, while source installation is available for advanced needs. It requires an existing XMPP server (like Prosody) to connect to, but documentation provides clear guides for integration.

? Is it a good alternative to proprietary cross-protocol SaaS tools?

Yes! Unlike proprietary SaaS tools (e.g., Franz Pro), Spectrum 2 is a server-side gateway that integrates with your existing XMPP client, avoiding vendor lock-in. It gives you full control over your data and supports more protocols than many commercial alternatives.

? Is Spectrum 2 completely free?

Absolutely! Spectrum 2 is licensed under the GNU General Public License (GPLv2), meaning it’s 100% free to use, modify, and self-host without any hidden costs or paid tiers.

Top Alternatives

Commercial XMPP bridge providers Search Google

Proprietary cross-network communication SaaS tools (e.g., Franz Pro) Search Google

Tool Info

Pricing Free/Open Source

Category Communication - Custom Communication Systems

Platform Self-Hosted

Pros

⊕ Full data control via self-hosting
⊕ Wide range of supported communication protocols
⊕ No subscription or licensing fees
⊕ Open-source codebase for customization

Cons

⊖ Requires basic XMPP server administration knowledge
⊖ Some protocols need API keys or extra configuration steps
⊖ Occasional protocol-specific compatibility bugs