qaul

qaul is a free, open-source software project that enables decentralized, local-area mesh networking for direct device-to-device communication without relying on central internet infrastructure. The qaul network allows nearby devices to discover each other and exchange messages and files over local connections such as Wi‑Fi or Bluetooth, forming an ad hoc peer-to-peer network. Because it operates locally, qaul is useful in situations with limited or disrupted internet access, in disaster response, remote areas, events, or classrooms.

The project comprises client software for multiple platforms and a lightweight protocol that governs peer discovery, routing, and data exchange within the mesh. There is an emphasis on privacy, low bandwidth usage, and resilience in network partitions.

Features commonly include text chat, file sharing, and local group conversations, with options to connect to other qaul nodes without reliance on a central server. The software is designed to be easy to install and operate in environments with varying network availability. It is released as open-source software, with community-driven development and documentation.

qaul's platform coverage includes desktop and mobile environments, with available clients for Windows, Linux, macOS, and Android. The project promotes education and community networks by enabling simple offline communication and collaboration.

See also: mesh networks, local-area networking, disaster resilience, peer-to-peer file sharing.