Changes for page 3. Free Software and Open Source Software
Last modified by chrisby on 2025/01/11 10:03
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... ... @@ -47,13 +47,15 @@ 47 47 48 48 **Copyleft Licenses** 49 49 50 - **Toaddress theproblems with proprietarysoftware, the FSF primarily promotes copyleftlicenses, which require that any derivative works of the software be licensed under the same terms as the original code. The term "derivative work" is legally somewhat vague, but a common understanding is that if the AGPL code is essential for the software to work, then the software is considered a derivative work. For example:**50 +Copyleft Licenses 51 51 52 -**If a software needs AGPL source code directly, it is a derivative work. this means that using an AGPL licensed library or putting AGPL code directly into the project makes it a proprietary product. 52 +To address the problems with proprietary software, the FSF primarily promotes copyleft licenses, which require that any derivative works of the software be licensed under the same terms as the original code. The term "derivative work" is legally somewhat vague, but a common understanding is that if the AGPL code is essential for the software to work, then the software is considered a derivative work. For example: 53 + 54 +If a software needs AGPL source code directly, it is a derivative work. this means that using an AGPL licensed library or putting AGPL code directly into the project makes it a proprietary product. 53 53 Another example is when software uses an external AGPL service over the network. 54 54 If the AGPL service is not essential and is an optional addition to the software, then it is not considered a derivative work. 55 55 If the AGPL service is an essential or even mandatory part of the software, then it is considered a derivative work. For example, a vendor might come up with the idea to use AGPL code in his proprietary software, but out-source it into a shareable service accessible over a network, so that his proprietary software does not directly need the AGPL code, but does not work without it. The proprietary software is tightly coupled to the AGPL code. This is still considered a derivative work, so this attempt to bypass the AGPL is prevented by the license. 56 -This copyleft license ensures that when contributions are made to a copyleft project, or when copylefted code is reused directly in another project, the resulting work must be released under the same copyleft license. This prevents vendors from incorporating copyleft code into proprietary products, and ensures that any derivative works remain open source. In addition, copyleft licenses require that the source code be made available to users so that they can modify, build, and control the software themselves. **58 +This copyleft license ensures that when contributions are made to a copyleft project, or when copylefted code is reused directly in another project, the resulting work must be released under the same copyleft license. This prevents vendors from incorporating copyleft code into proprietary products, and ensures that any derivative works remain open source. In addition, copyleft licenses require that the source code be made available to users so that they can modify, build, and control the software themselves. 57 57 58 58 **License Preferences** 59 59