OLSR is an "Optimized Link State Routing" protocol for Mobile Ad-Hoc networks.
- Main OLSR project page
- OpenWRT mesh howto
- Freifunk.net firmware based on OpenWRT
- OLSR on a Nokia N900
- Slides of a presentation at at IETF80 by OLSR.org (PDF) - has nice graphs and information about various mesh networks in Europe
- Batman - "better approach to mobile ad-hoc networking".