The best replacement for tpm is rcm.

The best alternatives to tpm are rated as following:
★★★★★  rcm
★★★  hsm
★★★  tqm
★★★  rpkm
★★★  pm
★★★  tcm
★★  apf
★  trustzone
★  bitlocker
★  kpp
★  trusted platform module
  apm
  lean manufacturing

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

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



Google Trends

Scale is based on the average worldwide traffic of tpm in all years. Click on graph for more.
tpm
rcm
hsm