Charybdis IRCd vs Mumble
A side-by-side comparison of two self-hosted chat & communication options — licensing, setup difficulty, resource needs, and what each one replaces.
Mumble
Low-latency, high-quality voice chat application
| Feature | Charybdis IRCd | Mumble |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 7 · At risk | 92 · Excellent |
| Status | Archived | Actively maintained |
| Category | Chat & Communication | Chat & Communication |
| License | GPL-2.0 | BSD-3-Clause |
| Language | C | C++ |
| Setup difficulty | Medium | Easy |
| Min. RAM | 64 MB | 128 MB |
| Deployment | bare-metal, source | docker, bare-metal, binary |
| GitHub stars | ★ 230 | ★ 8,303 |
| First released | 2008 | 2005 |
| Replaces | Discord, Slack | Discord, TeamSpeak, Ventrilo |
What are Charybdis IRCd and Mumble?
Charybdis IRCd
Charybdis is an IRCv3-capable IRC server daemon descended from ratbox, designed to power large IRC networks. It has been used as the basis for several other IRC server projects and is fully self-hostable.
- IRCv3-capable IRC server
- Designed for large networks
- Basis for other IRC daemons
Mumble
Mumble is an open-source, low-latency voice chat application primarily designed for gaming and group voice communication. The Murmur server component can be self-hosted for private voice channels.
- Very low audio latency
- Positional audio for gaming
- Encrypted voice connections
- Lightweight Murmur server
Charybdis IRCd vs Mumble: key differences
The biggest difference is maintenance: Charybdis IRCd's repository is archived and no longer developed, while Mumble is actively maintained. Charybdis IRCd is written in C, while Mumble is built with C++. Licensing differs — GPL-2.0 for Charybdis IRCd versus BSD-3-Clause for Mumble. Charybdis IRCd is the lighter option, starting around 64 MB of RAM against 128 MB for Mumble. Mumble is the more established project (first released 2005), while Charybdis IRCd arrived in 2008. Mumble has the considerably larger community, at 8,303 GitHub stars versus 230. Mumble lists first-class Docker deployment; Charybdis IRCd does not.
Why pick each one
Choose Charybdis IRCd if…
- Released under the GPL-2.0 license
- Written in C
- Tiny footprint — runs in 64 MB RAM
Choose Mumble if…
- Excellent voice quality
- Tiny resource footprint
Watch out for
- Voice-focused, limited text features
- Dated client UI
Frequently asked questions
Is Charybdis IRCd or Mumble better?
Mumble is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Charybdis IRCd if its specific feature set fits your needs better.
Are Charybdis IRCd and Mumble free and open-source?
Yes. Charybdis IRCd is licensed under GPL-2.0 and Mumble under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run Charybdis IRCd and Mumble with Docker?
Charybdis IRCd: check the project docs for container support. Mumble: yes.
Which is lighter on resources, Charybdis IRCd or Mumble?
Charybdis IRCd has the smaller minimum footprint at 64 MB of RAM, compared to about 128 MB for Mumble. Real-world usage depends on library size, user count, and enabled features.