The best replacement for edx is coursera.

The best alternatives to edx are rated as following:
★★★★★  coursera
★★★★  eds
★★★  xrf
★★★  xps
★★  ocw
★★  khan academy
★  ftir
★  auger
  udacity

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

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



Google Trends

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