Can you still sell work that is available under an open source licence?
An open-source developer can commercially licence software already available under an open-source licence. The commercial licence would ‘sell’ use of the software without the conditions imposed by the open source licence. This practice is known as dual-licensing. Open-source licences are not intended to ban commercial use. As a general rule, open source can be used commercially as long as the authors get a cut. However, commercial licencing can get complicated if the OSS has multiple components by different authors and under different licences.
