OptaPlanner is open source software, released under the Apache Software License 2.0. This license is very liberal and allows reuse for commercial purposes. Read the layman’s explanation.
OptaPlanner is 100% pure JavaTM and runs on any JVM 8 or higher. It integrates very easily with other JavaTM technologies. OptaPlanner is available in the Maven Central Repository.
Planner works on any Java Virtual Machine and is compatible with Standard Java, Enterprise Java, and all JVM languages.