The best replacement for cef is etf.

The best alternatives to cef are rated as following:
★★★★★  etf
★★★★  gld
★★★  fib
★★  gtu
★★  fast switching
★★  phys
★★  awesomium
★  node-webkit
★  dcef
★  qtwebkit
★  syslog
★  mlppp
★  webkit
★  yesss
  gdx
  cefr
  process switching
  cmf
  uit

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

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



Google Trends

Scale is based on the average worldwide traffic of cef in all years. Click on graph for more.
cef
etf
gld