• Underscore.js: A similar library for JavaScript
  • Enumerable: A similar library for Ruby
  • Clojure: A functional language whose standard library has several counterparts in toolz
  • itertools: The Python standard library for iterator tools
  • functools: The Python standard library for function tools
  • Functional Programming HOWTO: The description of functional programming features from the official Python docs.

Contemporary Projects

These projects also provide iterator and functional utilities within Python. Their functionality overlaps substantially with that of PyToolz.