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Quassel IRC

Distributed IRC client with an always-on core

Chat & Communication ★ 789 stars Medium setup GPL-3.0

Quassel is a distributed IRC client built around a central core that stays connected and one or more clients that attach to it. The core acts as a permanent bouncer storing backlog for all devices.

Official siteSource code

Key features

  • Always-on core bouncer
  • Synced backlog across devices
  • Qt desktop clients
  • PostgreSQL or SQLite storage

Strengths

  • Released under the GPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in C++
  • Tiny footprint — runs in 128 MB RAM

Quassel IRC replaces

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