The best replacement for ethernet cable is wireless.

The best alternatives to ethernet cable are rated as following:
★★★★★  wireless
★★  patch cable
★★  crossover
★★  wireless adapter
★★  phone cable
★  cat5
★  wireless connection
★  telephone cable
★  cat6
★  crossover cable
★  usb faster
★  network cable
★  wifi faster
★  powerline
★  usb cable
★  cat 5
★  phone cord
  wireless speed
  rj45
  lan cable
  phone line
  cat5 cable
  wireless router
  wifi speed
  cat 6
  networking cable

Your alternative for ethernet cable is not listed? Suggest!
Speaking about ethernet cable, one probably shouldn't forget about hdmi.

Other search terms related to ethernet cable and their ratings are:
★★★★★ hdmi
★ wireless router
You have in mind a companion for ethernet cable and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ethernet cable in all years. Click on graph for more.
ethernet cable
wireless
patch cable