Open-Source LAN Chat Clients Worth Trying in 2026
Local-network chat clients remain a simple, reliable way to communicate inside offices, classrooms, homes, or any environment where you want messaging without Internet‑hosted servers. Below are five well-maintained open‑source LAN chat clients (cross‑platform options when available), what they offer, and why you might try them in 2026.
1) BeeBEEP
- Platforms: Windows, macOS, Linux, Raspberry Pi
- License: GPLv3
- Key features: Serverless peer‑to‑peer messaging, AES encryption, group chat, file/folder transfer (with resume), offline messages, shared BeeBOX folders, desktop sharing, message history.
- Why try it: Mature project with active users and strong file‑sharing and folder‑sharing features suited to small teams that need a Dropbox‑like LAN option without cloud services.
2) Squiggle
- Platforms: Windows (primary), others via builds
- License: MIT
- Key features: Serverless P2P discovery, group/broadcast/private chat, file transfer, chat history, screenshot sharing, optional bridging across subnets, voice chat in some builds.
- Why try it: Lightweight, no‑install client with an approachable UI and peer discovery—good for quick deployments on Windows networks.
3) Simple XMPP (self‑hosted XMPP on LAN)
- Platforms: Any (clients available for Windows, macOS, Linux, mobile)
- License: Varies (server and clients often open source)
- Key features: Standards‑based XMPP (Jabber) with on‑premises server (Prosody, ejabberd), support for rooms, file transfer (XEPs), encryption (OTR/OMEMO), federation optional.
- Why try it: If you want a robust, extensible chat platform that can run purely on LAN with strong protocol support and many client choices.
4) LAN Messenger / Open‑Source Forks
- Platforms: Windows, macOS, Linux
- License: GPL/MIT (depends on fork)
- Key features: Simple peer discovery and direct messaging, message notifications, file transfer, group chat, no server required.
- Why try it: Minimal‑overhead option
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