Careware (also called charityware, helpware, or goodware) is software licensed in a way that benefits a charity. Some careware is distributed free, and the author suggests that some payment be made to either a nominated charity, or a charity of the user's choice. Commercial careware, on the other hand, includes a levy for charity on top of the distribution charge. It can also be a barter of some kind, or even a pledge to be kind to strangers.