Just a while ago - some time around 2008 - SDCard support for the WRT54GL ported from OpenWRT. During the next few years, improvements here and there (i.e. 3G USB modem support, Multiple SSID - a.k.a. guest WLAN - PPTP VPN server support and VLAN settings GUI). At last, bandwidth auditing and monitoring (a.k.a. IP Traffic Monitoring). Look for Teaman branches for the code (unmaintained these days - most of the code has been merged into several still active branches).
Notice: This project (geo.bott.eng.br) has been decommissioned and the live demos are no longer available.
Using LeaftletJS, these applications allow comparing maps of Porto Alegre and how the city has grown through time - users can select which layers to show, re-order them and play with transparency to see what's beneath a particular place over time.
