The best replacement for gee is tsetse.

The best alternatives to gee are rated as following:
★★★★★  tsetse
★★★★  mixed model
★★★★  haw
★★★  glmm
★★★  opozit
★★  jee
★★  gee
★★  glm
★★  nobody
★  mixed models
★  not to gee
★  random effects
★  ghee
  mixed
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Speaking about gee, one probably shouldn't forget about andy gibb.

Other search terms related to gee and their ratings are:
★★★★★ andy gibb
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gee
tsetse
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