Overview
Orbit is a modern web client for IRC, the open chat protocol that has quietly run communities for decades. It runs entirely in the browser, with nothing to install, and handles everything from a quick guest nick to a full account (SASL login and in-app registration). Whether a deployment lets people in as guests or asks them to register is its own choice, not the client's.
It powers tchatou.fr, and is built to be re-pointed at any IRCv3
network and rebranded from a single config.json, without recompiling.
What makes it different
- Full IRCv3. Orbit negotiates 25 capabilities: SASL, message-tags, reactions, typing indicators, read-markers, multi-line messages, server-side history, account registration, and Web Push. See IRCv3 capabilities.
- Pluggable at runtime. A static
config.jsonis fetched on startup and sets the server, channels, branding, themes and feature flags. One build can serve any community. See config.json reference. - Installable PWA. Mobile-first layout, offline app shell, and notifications when the tab is closed.
- Speaks 10 languages. The UI, system messages, and the bundled plugins are fully translated
and auto-detected (English, French, German, Spanish, Italian, Turkish, Russian, Nepali, and
Brazilian + European Portuguese). Pin a default with
defaults.lang. - Self-hostable. A static build behind any web server. The project even runs its own git server with push-to-deploy.
- Free software. AGPL-3.0: use it, modify it, self-host it.
Tech
React 19, TypeScript, Vite and zustand. Tested with Vitest, linted, and built in CI. The codebase is a clean modular tree; see Architecture.
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