You can download the End User License Agreements from the following links:
3DF Zephyr Lite, Pro, Aerial: https://www.3dflow.net/eula/3DF%20Zephyr%20Software%20License.txt
3DF Zephyr Free: https://www.3dflow.net/eula/3DF%20Zephyr%20Free%20Software%20License.txt
3DF Zephyr Aerial Education: https://www.3dflow.net/eula/3DF%20Zephyr%20Educational%20Software%20License.txt
Third party licenses can be found here: https://www.3dflow.net/3df-zephyr-third-party-software-licenses/