Opt4J
Modular Java framework for meta-heuristic optimization
...The benchmarks that are included comprise ZDT, DTLZ, WFG, and the knapsack problem.
The goal of Opt4J is to simplify the evolutionary optimization of user-defined problems as well as the implementation of arbitrary meta-heuristic optimization algorithms. For this purpose, Opt4J relies on a module-based implementation and offers a graphical user interface for the configuration as well as a visualization of the optimization process.