The best replacement for pro tools is sonar.

The best alternatives to pro tools are rated as following:
★★★★★  sonar
★★★★  logic
★★★★  cubase
★★★  ableton live
★★  logic pro
★★  fl studio
★  ableton
★  reason
★  garageband
★  nuendo
★  fruity loops
★  logic pro x
★  digital performer
★  cakewalk
★  pro tools hd
  reaper
  studio one
  logic 9
  adobe audition
  logic x
  logic studio
  garage band
  audition
  audacity
  fl studio 11
  pro tools express
  sonar 7
  acid pro
  pro logic
  logic 8
  studio one v2
  cubase sx
  studio one pro
  sonar x1
  logic express
  sony acid

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

Other search terms related to pro tools and their ratings are:
★★★★★ mbox
★★★ ilok
★★★ interface
★ apogee duet
★ mavericks
★ usb mic
★ new mac pro
★ focusrite
★ os x mavericks
★ reason
★ m audio
★ any interface
★ mbox mini
★ apollo
analog console
sibelius
motu
m box
audio interface
autotune
maschine
m-audio
firepod
mac mini
imac
You have in mind a companion for pro tools and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of pro tools in all years. Click on graph for more.
pro tools
sonar
logic