I'm very pleased with WRT54G_Wolf_W42_Alchemy_6rc1_by_TheIndividual.zip from
http://wrt54g.thermoman.de/ .
Current Alchemy feature additions:
* Hotspot portal
* PPTP VPN server
* Two-way bandwidth management (includes P2P, VoIP, IM)
* SSH client and server
* Telnet
* Startup, firewall, and shutdown scripts
* WDS repeater mode
* Client mode (support multiple attached devices)
* Adhoc mode
* OSPF routing
* RIP2 routing
* Power boost to 251 mw
* Antenna select
* Static DHCP address assignments
* Additional DDNS support
* Wireless MAC address clone
* VLAN support (hardware only)
* WPA over WDS
* WPA/TKIP with AES
* Client mode WPA
* Client isolation mode
* P2P blocking/bandwidth management (Gnutella, Kazaa, etc)
* Port triggering
* Wake-On-Lan
* Remote syslog
* Remote Ntop statistics
* SNMP
* Safe backup and restore
* Reset on firmware upgrade
* Status includes system uptime and load average
* Status for wireless clients and WDS
* Site survey
* Remote NTP server support
* Supports new WRT54G V2.2 and WRT54GS V1.1 models