The best replacement for lazarus is delphi.

The best alternatives to lazarus are rated as following:
★★★★★  delphi
★★★★  lazareth
★★★  goldman
★★  codetyphon
★★  delphi xe2
★★  qt creator
★★  free pascal
★  kylix
★  thompson
★  realbasic
★  samms
★  ogica
★  bovary
  zajonc
  macy's
  diaconescu
  selye

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Speaking about lazarus, one probably shouldn't forget about free pascal.

Other search terms related to lazarus and their ratings are:
★★★★★ free pascal
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Google Trends

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lazarus
delphi
lazareth