The best replacement for tongues is prayer language.

The best alternatives to tongues are rated as following:
★★★★★  prayer language
★★★★  speaking in tongues
★★★★  prophecy
★★★★  no tongues
★★  praying in tongues
★  glossolalia
★  gift of tongues
★  not praying in tongues
★  holy spirit
★  unknown tongues
★  modern day tongues
  praying in the spirit
  in tongues
  tongue
  baptized with the holy spirit
  other tongues

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

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



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tongues
prayer language
speaking in tongues