The best replacement for plate carrier is chest rig.

The best alternatives to plate carrier are rated as following:
★★★★★  chest rig
★★★  vest
★★★  body armor
★★  iotv
★★  tactical vest
★★  soft armor
★★  bullet proof vest
★  chest rig airsoft
★  ballistic vest
★  mayflower apc
★  battle belt
  armor carrier

Your alternative for plate carrier is not listed? Suggest!
Speaking about plate carrier, one probably shouldn't forget about soft armor.

Other search terms related to plate carrier and their ratings are:
★★★★★ soft armor
★★★ kevlar
★★★ chest rig
★ battle belt
You have in mind a companion for plate carrier and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of plate carrier in all years. Click on graph for more.
plate carrier
chest rig
vest