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ircu2

IRC server daemon used by the Undernet network

Chat & Communication ★ 64 stars Medium setup GPL-2.0

ircu2 (ircd-undernet) is the IRC server daemon developed for and used by the Undernet IRC network. It can be self-hosted to run an IRC network and supports a feature-rich channel and server model.

Official siteSource code

Key features

  • IRC server used by Undernet
  • Feature-rich channel model
  • Lightweight C daemon

Strengths

  • Released under the GPL-2.0 license
  • Written in C
  • Tiny footprint — runs in 64 MB RAM

Is ircu2 secure?

OSV.dev has no published security advisories for ircu2's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

ircu2 replaces

Self-hosted Discord alternativesSelf-hosted Slack alternatives

Health badge

Maintain ircu2? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 51 · fair

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The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

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