License4J - License Manager, Software Licensing Solutions

License4J is a java software licensing library which supports generation of license files and cryptographically secure serial numbers product keys). It includes License Manager and Serial Number Manager GUI applications for easy license file and serial number generation for your customers.

License4J supports node locked and floating license files, and also includes a free to use and distribute Floating License Server application. Floating License Server runs as a service on both Linux and Windows systems; and includes a GUI application for license management and usage monitoring.

License Manager Application generates license files with your desired features. Node locked or floating license files can be defined on the same screen easily, and can be exported as a plain text or encrypted file.

License4J Serial Number Manager Application supports customer specific single and generic bulk serial number generation. Serial numbers can be copied or exported with a single click.