The best replacement for nxt is nxt tour.

The best alternatives to nxt are rated as following:
★★★★★  nxt tour
★★  pro v1
★★  ev3
★★  wwe
★★  tna
★★  ultimate wax
★  gold class
★  ethereum
★  vex
★  sft shocker
★  ripple
★  peercoin
★  zaino
★  rcx
★  etek
  tough enough
  sft
  qstar
  ultimate
  nanowax
  ecw
  proworx 32
  sensation
  pro v1x
  dt solo
  titleist nxt tour

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

Other search terms related to nxt and their ratings are:
★★★★★ labview
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nxt tour
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