The best replacement for firewire is usb.

The best alternatives to firewire are rated as following:
★★★★★  usb
★★★  usb 2.0
★★  esata
★★  usb 3.0
★★  usb 2
★★  ethernet
★  thunderbolt
★  usb audio interface
★  sata
★  usb speed
★  usb2
★  pci
  usb3
  thunderbolt cable
  usb 3
  usb 3.0 speed
  usb faster
  ilink
  usb 3 faster
  ieee 1394
  usb 2.0 speed
  usb interface
  usb2.0
  thunderbolt faster
  intel\u0027s usb
  usb mixer
  usb 3.0 faster
  usb audio
  scsi
  usb sound cards
  usb which is faster
  usb hard drive
  sata speed
  3.0
  usb audio interfaces
  ide
  usb for audio
  usb cable
  gigabit ethernet
  usb latency
  usb speeds
  ethernet faster
  usb port
  s-video
  usb 3 speed

Your alternative for firewire is not listed? Suggest!
Speaking about firewire, one probably shouldn't forget about macbook pro.

Other search terms related to firewire and their ratings are:
★★★★★ macbook pro
★★★★★ pc
★★★★ imac
★★★ mac
★★ laptop
★ pcmcia
★ camcorder
★ this mackie
★ mac book pro
backup 200 gb hard drive
migration assistant
You have in mind a companion for firewire and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of firewire in all years. Click on graph for more.
firewire
usb
usb 2.0