The best replacement for macports is fink.

The best alternatives to macports are rated as following:
★★★★★  fink
★★★★★  homebrew
★★★  darwinports
★★  pip
★  rvm
★  brew
  pkgsrc
  mamp

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

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



Google Trends

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macports
fink
homebrew