The best replacement for pmp is capm.

The best alternatives to pmp are rated as following:
★★★★★  capm
★★★★  mba
★★★★  pmi
★★★  prince2
★★★  six sigma
★★  pgmp
★★  itil
★  capm certification
★  cbap
★  lean six sigma
★  pe
★  pmi certification
★  cissp
★  agile
★  pmi-acp
★  mpm
★  pmi acp
★  six sigma certification
  cpm
  pmc
  pmo certification
  project
  scrum
  cbap certification
  prince 2
  prince2 certification
  avc
  black belt
  msc in project management
  pmbok
  ccm
  capm exam

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

Other search terms related to pmp and their ratings are:
★★★★★ itil
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Google Trends

Scale is based on the average worldwide traffic of pmp in all years. Click on graph for more.
pmp
capm
mba