The best replacement for fibonacci is frescobaldi.

The best alternatives to fibonacci are rated as following:
★★★★★  frescobaldi
★★★  golden ratio
★★  lucas numbers
★  golden spiral
★  martingale
  leonardo of pisa

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Speaking about fibonacci, one probably shouldn't forget about trading.

Other search terms related to fibonacci and their ratings are:
★★★★★ trading
★★★★ support and resistance
★★★★ recursion python
★★★ stock charts
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