A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
The Free Software Foundation defined the term Free Software and is owner of the GNU-licenses.
For questions about Eclipse Public License (EPL), that is a certified Open Source license created specifically for the Eclipse Foundation.
For questions about the Creative Commons CC-BY-NC-SA (Attribution-NonCommercial-ShareAlike) license
Questions about the history of open projects, philosophies, and coming to being.
.For questions concerning the promotion and advertising of open projects, and their implications with the general public, society, and respective organizations.
used for concerns about licenses to software and what rights one grants.
For questions about non-legalese licenses written by programmers either jokingly or to be understandable.
For questions about statistical data relevant to the FLOSS movement
For questions about permissive licenses, such as Apache or MIT. Note: this does not include public domain or CC0. Use [public-domain] instead.
for questions about the philosophy behind open source and free software.
For questions about the Creative Commons CC-BY-NC (Attribution-NonCommercial) license
For questions about the Creative Commons CC-BY-ND (Attribution-NoDerivs) license
For questions that deals with freedoms normally provided and/or guaranteed by Free and Open Software.
For questions about providing or disclaiming a warranty when distributing or supporting open source software.
For questions about Free/Libre and Open Source Software. You can ask about the origin of the word, or it rationale for naming. For general cases, use the [terminology] tag.
For questions about DRM, aka Digital (Rights/Restrictions) Management, and its applications to projects.