The best replacement for google account is gmail account.

The best alternatives to google account are rated as following:
★★★★★  gmail account
★  youtube
  samsung account
  microsoft account
  google apps account

Your alternative for google account is not listed? Suggest!
Speaking about google account, one probably shouldn't forget about gmail.

Other search terms related to google account and their ratings are:

★★★★★ gmail
★★★★ non google email
★★★ youtube
★★★ google plus
★★ gmail android
★★ google+
gmail address
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You have in mind a companion for google account and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of google account in all years. Click on graph for more.
google account
gmail account