GitHub - jOOQ/jOOL: jOOλ - The Missing Parts in Java 8 jOOλ improves the JDK libraries in areas where the Expert Group’s focus was elsewhere. It adds tuple support, function support, and a lot of additional functionality around sequential Streams. The JDK 8’s main efforts (default methods, lambdas, and the Stream API) were focused around maintaining backwards compatibility and implementing a functional API for parallelism.

GitHub - aol/cyclops: An advanced, but easy to use, platform for writing functional applications in Java 8.

An advanced but easy to use platform for writing functional applications in java 8 git hub aol cyclops an advanced but easy to use platform for writing functional applications in java 8

GitHub - derive4j/derive4j: Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, folds, optics and typeclasses.

Java 8 annotation processor and framework for deriving algebraic data types constructors pattern matching folds optics and typeclasses git hub derive4j derive4j java 8 annotation processor

Fugue - Functional extensions to Guava.

Functional Java

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GitHub - poetix/protonpack: Stream utilities for Java 8

Stream utilities for java 8 contribute to poetix protonpack development by creating an account on git hub

GitHub - amaembo/streamex: Enhancing Java Stream API

Enhancing java stream api contribute to amaembo streamex development by creating an account on git hub

Vavr

Vavr is an object functional library for java 8