The best replacement for openwrt is tomato.

The best alternatives to openwrt are rated as following:
★★★★★  tomato
★★★★  dd-wrt
★★  gargoyle
★★  pfsense
★★  mikrotik
★  dd wrt
★  airos
★  buildroot
  hyperwrt
  x wrt

Your alternative for openwrt is not listed? Suggest!
Speaking about openwrt, one probably shouldn't forget about luci.

Other search terms related to openwrt and their ratings are:
★★★★★ luci
You have in mind a companion for openwrt and it is not yet here? Propose!



Google Trends

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