The best replacement for wsus is sccm.

The best alternatives to wsus are rated as following:
★★★★★  sccm
★★★★  sus
★★★★  sms
★★  windows update
★★  shavlik
★★  sccm 2012
★★  kace
★  configuration manager
★  sccm patch management
★  altiris patch management
★  scom
★  system center essentials
★  patchlink
★  microsoft update
★  lumension
★  sccm software updates
  system center
  autopatcher
  altiris
  sccm 2007
  sccm for windows updates
  group policy
  landesk
  itmu
  bigfix
  mbsa
  sms 2003

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

Other search terms related to wsus and their ratings are:
★★★★★ ssl
★★★★ group policy
★★★★ sccm
★★★ gpo
★★★ sccm 2012
★★ sccm 2007
You have in mind a companion for wsus and it is not yet here? Propose!



Google Trends

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wsus
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