YaBB is a free, open-source project. We do not publicly promote licensing because of this good-natured ideal. Site licenses are not required for personal or commercial use if you wish to use YaBB in a standard manner and will be leaving the copyright notices and links visible on all pages of your forum. Any non-standard use, including removal of the copyrights, requires a license. To see if you comply with YaBB's license, the YPL, please read the license included in the package you have downloaded.

Buying a license gives you the right to remove the copyright at the bottom of one forum on your website, although it does not give you priority support. However, we will help you with the aforementioned items. Licenses apply for the current major version of YaBB you purchase it for and any service pack or upgrade that may exist in the future for that major version.