Common utilities and classes for collections.
Carefully designed and efficient extension of the Java Collections Framework with primitive specializations and more, built for Java 8 (API)
Ponzu is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings.
A supplement to the Java Collections library.
Dynamic Collections provides a suite of tools to extend and enhance the Java Collections API.
Collections library of the Staccatissimo project, focused on providing new abstractions that mix object oriented and functional programming style for dealing with iterable objects.
Efficient Java collections for primitive integer types