License4J is a pure Java library for creating and validating licenses. The key concept is features of a license. You can easily add any feature to your license file, i.e. name of the product, version, expiry date, number of executable instances, etc.
Java package/API to send and receive faxes. It can be used to send and receive faxes from your java applications to any group 3 facsimile machine. It requires a class 1 faxmodem, it can fax images, text, html and pdf files. Source code is available.
License4J is a Java library for java software licensing. It is designed to be easy to use and integrate in your Java application. License4J creates license files and secure serial numbers. Includes a free to use,distribute floating license server.