irssi vs KiwiIRC
A side-by-side comparison of two self-hosted chat & communication options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | irssi | KiwiIRC |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 69 · Good | 57 · Fair |
| Category | Chat & Communication | Chat & Communication |
| License | GPL-2.0 | Apache-2.0 |
| Language | C | Vue |
| Setup difficulty | Medium | Medium |
| Min. RAM | 32 MB | 128 MB |
| Deployment | bare-metal, binary, source | docker, bare-metal, source |
| GitHub stars | ★ 3,141 | ★ 989 |
| First released | 1999 | 2011 |
| Replaces | Slack | Slack, Discord |
What are irssi and KiwiIRC?
irssi
irssi is a terminal-based IRC client known for its stability, scripting support, and clean interface. It can be combined with screen or tmux to act as a long-running session.
- Terminal interface
- Perl scripting
- Themeable display
- Long-running stability
KiwiIRC
KiwiIRC is a fully featured IRC client that runs in the browser and can be embedded into any website. It includes a webircgateway component for self-hosting your own embeddable IRC chat.
- Embeddable web IRC widget
- Themeable interface
- Plugin system
- Works without browser plugins
irssi vs KiwiIRC: key differences
Irssi is written in C, while KiwiIRC is built with Vue. Licensing differs — GPL-2.0 for irssi versus Apache-2.0 for KiwiIRC. Irssi is the lighter option, starting around 32 MB of RAM against 128 MB for KiwiIRC. Irssi is the more established project (first released 1999), while KiwiIRC arrived in 2011. Irssi has the considerably larger community, at 3,141 GitHub stars versus 989. KiwiIRC lists first-class Docker deployment; irssi does not.
Why pick each one
Choose irssi if…
- Released under the GPL-2.0 license
- Active community (3.1k GitHub stars)
- Written in C
- Tiny footprint — runs in 32 MB RAM
Choose KiwiIRC if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Written in Vue
- Tiny footprint — runs in 128 MB RAM
Watch out for
- IRC-only
- Needs gateway for direct connections
Frequently asked questions
Is irssi or KiwiIRC better?
Neither is universally better. irssi has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are irssi and KiwiIRC free and open-source?
Yes. irssi is licensed under GPL-2.0 and KiwiIRC under Apache-2.0. Both can be self-hosted at no software cost.
Can I run irssi and KiwiIRC with Docker?
irssi: check the project docs for container support. KiwiIRC: yes.
Which is lighter on resources, irssi or KiwiIRC?
irssi has the smaller minimum footprint at 32 MB of RAM, compared to about 128 MB for KiwiIRC. Real-world usage depends on library size, user count, and enabled features.