The best replacement for sbs 2011 is server 2012.

The best alternatives to sbs 2011 are rated as following:
★★★★★  server 2012
★★★★★  sbs 2008
★★★★  2008 r2
★★★★  server 2012 essentials
★★★  server 2008
  sbs 2003
  2008

Your alternative for sbs 2011 is not listed? Suggest!
Speaking about sbs 2011, one probably shouldn't forget about terminal server.

Other search terms related to sbs 2011 and their ratings are:
★★★★★ terminal server
You have in mind a companion for sbs 2011 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sbs 2011 in all years. Click on graph for more.
sbs 2011
server 2012
sbs 2008