The MOEA Framework is a free and open source Java library for developing and experimenting with multiobjective evolutionary algorithms (MOEAs) and other metaheuristics.

• Fast, reliable implementations of over 25 MOEAs, including NSGA-III and MOEA/D.
• Suite of tools for comparing and statistically testing algorithms.
• Master-slave, island-model, and hybrid parallelization.
• Permissive open source license (LGPL)

Download the latest release from the GitHub Releases page. Maven users can add our dependency to their pom.xml file:

<dependency>
    <groupId>org.moeaframework</groupId>
    <artifactId>moeaframework</artifactId>
    <version>5.1</version>
</dependency>

Check out our examples, online documentation, and API Specification (Javadoc) to get started.

Below we solve the 2-objective DTLZ2 problem using NSGA-II:

Problem problem = new DTLZ2(2);

NSGAII algorithm = new NSGAII(problem);
algorithm.run(10000);

algorithm.getResult().display();

If you use this software in your work, please cite it as follows (APA style):

Hadka, D. (2025). MOEA Framework A Free and Open Source Java Framework for Multiobjective Optimization (Version 5.1) [Computer software]. Retrieved from https://github.com/MOEAFramework/MOEAFramework.