Open Validator is licensed under GNU/GPL version 3. This license gives you the freedom to execute it for any lawful purpose, the freedom to study how the program works and adapt it to your needs, the freedom to redistribute copies so you can help your neighbor and the freedom to improve it and release your improvements to the public, so that the whole community benefits . However, you must grant to everyone who receives it the same rights you have and everyone must have access to its source code.