The best replacement for dd-wrt is tomato.

The best alternatives to dd-wrt are rated as following:
★★★★★  tomato
★★★★★  openwrt
★★  gargoyle
★★  pfsense
★  tomato firmware
★  netgear firmware
★  linksys firmware
★  asus firmware
★  tomato rt-n16
★  asuswrt
  tomato usb
  shibby
  routeros
  tomato router
  tomato asus rt-n66u
  hyperwrt
  mikrotik
  tomato better
  buffalo firmware
  sveasoft
  open-wrt

Your alternative for dd-wrt is not listed? Suggest!
Speaking about dd-wrt, one probably shouldn't forget about openvpn.

Other search terms related to dd-wrt and their ratings are:
★★★★★ openvpn
★★★★ opendns
★★★★ vpn
★★★ tp-link
★★ dsl
★ chillispot
★ netgear
You have in mind a companion for dd-wrt and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dd-wrt in all years. Click on graph for more.
dd-wrt
tomato
openwrt