#OPEN SOURCE SOFTWARE CATEGORIES CODE#
The Apache License 2.0 is also similar to the MIT License, but it mandates distributed programs that use the licensed code to a) state any major changes made to the original, and b) include a copy of the NOTICE file with attribution notes (if the original library has one), along with the copyright notice and license text requirements. Another popular permissive option, the BSD 3-Clause license, is similar to the MIT License, but with an additional condition that prohibits using the name of the author or its contributors (of the BSD 3-licensed code) to market or promote a derivative work without express written permission. Users can take the permissive-licensed software, make it their own through changes or additions, and distribute that modified program with only a handful of conditions.įor example, the most commonly used permissive license (the MIT License) only requires distributed programs that use the licensed code to include a copyright notice and copy of the license text. Permissive licenses generally allow for use of the licensed code with few restrictions. Permissive licenses tend to have fewer restrictions on use of the licensed code than copyleft licenses. There are two main types of open source licenses: permissive and copyleft. If you author a piece of open source software, selecting the wrong license may allow companies to leverage your project in ways you don't approve of. If you use an open source component, you are legally responsible for complying with the terms of its license. Understanding open source software licenses is extremely important for both OSS authors and users. Generally, open source license terms kick in upon distribution of your software - if you only use an open source component for an internal tool, for example, you probably won't be bound by requirements that would otherwise apply. Open source licenses serve as a legal agreement between open source author and user: authors make OSS available for free, but with certain requirements the user must follow. Open source licenses dictate the terms and conditions that come with the use of open source software (OSS).
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