The best replacement for assembly is c.

The best alternatives to assembly are rated as following:
★★★★★  c
★★★★  assembler
★★★  dll
★★★  machine language
★★★  senate
★  high level language
★  assembly
★  namespace c#
★  instruction
★  namespace
★  parliament
★  maintenance
★  assemblage
★  module
★  manufacturing
  fortran
  constitutional convention
  group revit
  machine code
  high level
  high language
  alignment
  state senate
  c language
  c microcontroller
  house of representatives
  assemblies
  kit
  shade
  convention
  block design

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

Other search terms related to assembly and their ratings are:
★★★★★ os
★★★ overflow
★ assembly
★ using assembly
inventor lt
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Google Trends

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assembly
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