The best replacement for spanx is assets.

The best alternatives to spanx are rated as following:
★★★★★  assets
★★★★  flexees
★★★  yummie tummie
★★★  equmen
★★  lipo in a box
★★  miraclesuit
★★  girdle
★★  kymaro
★★  body magic
★★  maidenform
★  corset
★  shapewear
★  belly bandit
★  yummie
★  bellefit
★  dr rey shapewear
★  insta slim
★  tommy john
★  nancy ganz
★  yummy tummy
★  starpower
  compression garment
  ardyss
  kymaro body shaper
  sassybax
  under armour
  wacoal
  squeem
  compression garments
  body wrap
  love my assets
  trinny and susannah
  body shapers
  kimora

Your alternative for spanx is not listed? Suggest!
Speaking about spanx, one probably shouldn't forget about strapless bra.

Other search terms related to spanx and their ratings are:
★★★★★ strapless bra
You have in mind a companion for spanx and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of spanx in all years. Click on graph for more.
spanx
assets
flexees