A copyright license can be nonexclusive or exclusive, also known as limited and unlimited, respectively. When an exclusive license is given, the licensee, or person receiving authorization, is the only entity with the right to use the copyrighted work for the length of the licensing agreement. With a nonexclusive license, other people or companies could also be authorized to use the work at the same time.
著作權之授權可分為非專屬或專屬授權，可以被理解成受限和非受限之授權。
當被授權係專屬授權，所授權之被授權者在授權期間係唯一有權去利用著作之人，如果取得的是非專屬授權，在授權期間，他人係可以被授權去利用著作。
Another kind of copyright license applies only to open-source software, or a computer program that allows anyone to use, modify, or distribute the software. An example of an open-source program is the web browser Mozilla Firefox, which allows contributors to add new software features through plugins and code changes.
另一種只適用於開放原始碼軟體或電腦程式著作之著作權授權模式，其允許任何人利用、修改或散布該軟體。例如 開放原始碼軟體之Mozilla Firefox網頁瀏覽器（一個自由及開放原始碼的網頁瀏覽器），其允許投注者可透由插件和改變原始碼來增加新軟體的特色。
