The best replacement for tool is perfect circle.

The best alternatives to tool are rated as following:
★★★★★  perfect circle
★★★  radiohead
★★  dream theater
★★  instrument
★  slipknot
★  deftones
★  opeth
★  douchebag
★  nine inch nails
★  device
★  technique
★  utility
★  pantera
★  douche
★  application
★  korn
★  utensil
★  nin
  pink floyd
  dremel
  harbor freight
  rotary tool
  flip top cover
  leatherman
  redsnow
  redsn0w
  spiral saw
  porcupine tree
  nirvana
  code reader
  halligan tool
  sinclair priming tool
  snagit
  assessment tool
  mars volta
  system of a down
  soft tool
  machine
  hard tool
  artefact
  tool
  electric tool

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

Other search terms related to tool and their ratings are:
★★★★★ failure
★★★★ henry rollins
★★★ yob
★★★ kirk hammett
You have in mind a companion for tool and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of tool in all years. Click on graph for more.
tool
perfect circle
radiohead