irssi vs WeeChat
A side-by-side comparison of two self-hosted chat & communication options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | irssi | WeeChat |
|---|---|---|
| Deploy effort | Read-the-docs project | Read-the-docs project |
| Health score | 69 · Good | 88 · Excellent |
| Category | Chat & Communication | Chat & Communication |
| License | GPL-2.0 | GPL-3.0 |
| Language | C | C |
| Setup difficulty | Medium | Medium |
| Min. RAM | 32 MB | 64 MB |
| Deployment | bare-metal, binary, source | bare-metal, binary, source |
| GitHub stars | ★ 3,141 | ★ 3,393 |
| First released | 1999 | 2003 |
| Replaces | Slack | Slack |
What are irssi and WeeChat?
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
WeeChat
WeeChat is a fast, lightweight chat client that runs in the terminal and supports IRC and many other protocols through plugins. Its relay protocol allows remote clients to connect to a persistent session.
- Terminal interface
- Scriptable in many languages
- Relay protocol for remote clients
- Highly extensible
irssi vs WeeChat: key differences
Both projects are written in C. Licensing differs — GPL-2.0 for irssi versus GPL-3.0 for WeeChat. Irssi is the lighter option, starting around 32 MB of RAM against 64 MB for WeeChat. Irssi is the more established project (first released 1999), while WeeChat arrived in 2003.
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 WeeChat if…
- Released under the GPL-3.0 license
- Active community (3.4k GitHub stars)
- Written in C
- Tiny footprint — runs in 64 MB RAM
Frequently asked questions
Is irssi or WeeChat better?
Neither is universally better. WeeChat has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are irssi and WeeChat free and open-source?
Yes. irssi is licensed under GPL-2.0 and WeeChat under GPL-3.0. Both can be self-hosted at no software cost.
Can I run irssi and WeeChat with Docker?
irssi: check the project docs for container support. WeeChat: check the project docs for container support.
Which is lighter on resources, irssi or WeeChat?
irssi has the smaller minimum footprint at 32 MB of RAM, compared to about 64 MB for WeeChat. Real-world usage depends on library size, user count, and enabled features.