Communities

Offline

• Freifunk - Germany's largest community wifi project.
• Guifi.net - Spain's largest community wifi project.
• SudoRoom's Mesh Group - A collective of collectives stewarding a large community space in Oakland, California.
• Broadband-Hamnet - A high speed, self discovering, self configuring, fault tolerant, wireless computer network that can run for days from a fully charged car battery, or indefinitely with the addition of a modest solar array or other supplemental power source. The focus is on emergency communications for HAM operators.

Online

• DarkNetPlan - A Reddit community for discussion of off-grid communications and mesh networking.
• Hyperboria - A community of local Wifi initiatives, programmers, and enthusiasts. Largest public cjdns network.
• MeshLocals - A list of all of the meshlocals, working on mesh networks. Have an update? Send a pull request!

Documentation

• Wireless Mesh Networking - A wikibook dedicated to the subject.
• open80211s - This page provides a quick introduction to open80211s and gives step by step guide on how to set up a mesh network using open80211s and a supported driver.

Protocols

Routing

• batman-adv - Batman advanced is a new approach to wireless networking which does no longer operate on the IP basis. Source Code GPLv2 C
• OLSR - The Optimized Link State Routing Protocol (OLSR) is an IP routing protocol optimized for mobile ad hoc networks, which can also be used on other wireless ad hoc networks. Source Code BSD C
• GNUnet - A mesh routing layer for end-to-end encrypted networking and a framework for distributed applications designed to replace the old insecure Internet protocol stack. Source Code GPLv3 Java (Various)
• babled - Babel is a loop-avoiding distance-vector routing protocol for IPv6 and IPv4 with fast convergence properties. It is based on the ideas in DSDV, AODV and Cisco's EIGRP, but is designed to work well not only in wired networks but also in wireless mesh networks, and has been extended with support for overlay networks. Source Code MIT C

Stack

• BLEMP - Bluetooth Low Energy Mesh Protocol for nRF51 Nordic chips. Source Code BSD C

Software

AllInOne

• Commotion Wireless - Commotion is an open-source communication tool that uses wireless devices to create decentralized mesh networks on routers, mobiles, and desktops. Source Code GPLv3 C
• LifeNet - LifeNet is a WiFi-based data communication solution designed for post-disaster scenarios. It is open-source software and designed to run on consumer devices such as laptops, smart-phones and wireless routers. Source Code GPLv3 C

Desktop

• Project Byzantium - Ad-hoc wireless mesh networking for the zombie apocalypse. Unlike most mesh implementations, a Byzantium Mesh requires no specialized equipment that may not be easy to get during an emergency, just an x86 computer with at least one 802.11 a/b/g/n wireless interface. Source Code GPLv3 C
• ZeroNet - ZeroNet is a decentralized Internet-like network of peer-to-peer users. Each visitor is also a host. Source Code GPLv2 Python
• FreeNet - Communications by Freenet nodes are encrypted and are routed through other nodes to make it extremely difficult to determine who is requesting the information and what its content is, data is shared by all users on the network. Source Code GPLv2 Java

Mobile

• Disaster.radio - A disaster-resilient communications network powered by the sun. Source Code GPLv3 Python
• ServalMesh Batphone - This app assumes zero infrastructure. The phones talk to each other using WiFi; relaying calls and messages and figuring out how to resolve numbers. In other words, it lets your phone communicate with other Android phones running Serval Mesh within WiFi range. Source Code GPLv3 Java
• Underdark - Mobile peer-to-peer mesh networking library. Integrates into iOS and Android apps and works over Wi-Fi and Bluetooth. Demo app called Solidarity available for download. Source Code modified-Apache 2.0(With Extra Clause) Java
• Splinternet - A serverless, unblockable messaging system for Android. Source Code MIT? Java
• AirChat - Free Communications For Everyone. Each node only cares for what is being received. No hardware identification, no transmitter plain identification. only packets matter. transmissions are anonymous. whenever an address is needed to reply to a packet, it is encrypted inside the packet. Source Code modified-WTFPL Perl
• Briar - Briar is a messaging app designed for activists, journalists, and anyone else who needs a safe, easy and robust way to communicate. If the internet's down, Briar can sync via Bluetooth or Wi-Fi, keeping the information flowing in a crisis. Source Code GPLv3 Java

Router

• Quick Mesh Project - Quick Mesh Project (qMp) is a system for easily deploying Mesh/MANET networks using Wi-Fi technology. Source Code GPLv2 C