The best replacement for essentials is norton.

The best alternatives to essentials are rated as following:
★★★★★  norton
★★★★  avast
★★★  avg
★★★  defender
★★★  windows defender
★★  mcafee
★★  sheer cover
★★  commandbook
★  essentials plus
★  4e
★  standard 2012
★  norton 360
★  standard 2012 r2
★  avia
★  kaspersky
★  avg free
★  bare minerals
★  standard vmware
★  norton antivirus
★  ibank
★  avira
★  nero 7 ultra
★  permissionsex
  norton security
  admincmd
  affirm
  msdn
  healthpak
  webroot
  simply calphalon
  sheer coverage
  jcommands
  north 360
  mizani
  bare escentuals
  rephresh
  pediasure
  mcafee av
  technique
  symantec endpoint
  window defender
  norton internet security

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

Other search terms related to essentials and their ratings are:
★★★★★ permissionsex
★ mcafee
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Google Trends

Scale is based on the average worldwide traffic of essentials in all years. Click on graph for more.
essentials
norton
avast