Josh Kuo has an interesting article about giving your old Linksys a new lease on life with the OpenWRT project. Some of the options after installing OpenWRT:

  • Install asterisk
  • VoIP
  • router/firewall on steroids with nmap, snort, and tcpdump
  • VPN with openvpn
  • Wireless hotspot with chilispot, FreeRadius and WPA.
  • All-purpose office server with DHCP, cups, lighthttpd, NTP

OpenWRT is not officially released - its current version is Release Candidate 6.