The best replacement for expander is gate.

The best alternatives to expander are rated as following:
★★★★★  gate
★★★★  extraction
★★★  compressor
★★  tooth extraction
★★  pull teeth
★★  star nut
★★  retainer
★  expandir
★  unrarx
★  jt valve
★  crimp pex
★  expander
  damon system
  extruder

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

Other search terms related to expander and their ratings are:
★★★★★ alloderm
★ herbst
★ sata drives
You have in mind a companion for expander and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of expander in all years. Click on graph for more.
expander
gate
extraction