Free software, libre software, or libreware is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, not price; all users are legally free to do what they want with their copies of a free software regardless of how much is paid to obtain the program. Computer programs are deemed "free" if they give end-users ultimate control over the software and, subsequently, over their devices.
GNU is an extensive collection of free software, which can be used as an operating system or can be used in parts with other operating systems. The use of the completed GNU tools led to the family of operating systems popularly known as Linux. Most of GNU is licensed under the GNU Project's own General Public License (GPL).
The Open Source Initiative (OSI) is the steward of the Open Source Definition, the set of rules that define open source software. It is a California public-benefit nonprofit corporation, with 501(c)(3) tax-exempt status.
Lester Lawrence Lessig III is an American legal scholar and political activist. He is the Roy L. Furman Professor of Law at Harvard Law School and the former director of the Edmond J. Safra Center for Ethics at Harvard University. Lessig was a candidate for the Democratic Party's nomination for president of the United States in the 2016 US presidential election but withdrew before the primaries.
Eben Moglen is an American legal scholar who is professor of law and legal history at Columbia University, and is the founder, Director-Counsel and Chairman of Software Freedom Law Center.
Free Software Foundation (FSF) grants two annual awards. Since 1998, FSF has granted the award for Advancement of Free Software and since 2005, also the Free Software Award for Projects of Social Benefit.
Peter Andreas Thiel is a German-American billionaire entrepreneur, venture capitalist, and political activist. A co-founder of PayPal, Palantir Technologies, and Founders Fund, he was the first outside investor in Facebook. As of June 2023, Thiel had an estimated net worth of $9.7 billion and was ranked 213th on the Bloomberg Billionaires Index.
Robert "Bob" Chassell was one of the founding directors of the Free Software Foundation (FSF).
The Software Freedom Law Center (SFLC) is an organization that provides pro bono legal representation and related services to not-for-profit developers of free software/open source software. It was launched in February 2005 with Eben Moglen as chairman. Initial funding of US$4 million was pledged by Open Source Development Labs.
Bradley M. Kuhn is a free software activist from the United States.
Free and open-source software (FOSS) is a term used to refer to groups of software consisting of both free software and open-source software, where anyone is freely licensed to use, copy, study, and change the software in any way, and the source code is publicly available so that people are encouraged to improve the design of the software. This is in contrast to proprietary software, where the software is under restrictive copyright or licensing and the source code is hidden from the users.
Richard Matthew Stallman, also known by his initials, rms, is an American free software movement activist and programmer. He campaigns for software to be distributed in such a manner that its users have the freedom to use, study, distribute, and modify that software. Software that ensures these freedoms is termed free software. Stallman launched the GNU Project, founded the Free Software Foundation (FSF) in October 1985, developed the GNU Compiler Collection and GNU Emacs, and wrote all versions of the GNU General Public License.
Defective by Design (DBD) is a grassroots anti-digital rights management (DRM) initiative by the Free Software Foundation (FSF) and CivicActions. Launched in 2006, DBD believes that DRM makes technology deliberately defective, negatively affects digital freedoms, and is "a threat to innovation in media, the privacy of readers, and freedom for computer users." The initiative regularly campaigns against the use of DRM by the media industry and software industry to increase awareness of the anti-DRM movement and pressure industries into no longer using DRM. They are known for their use of hazmat suits in their demonstrations.
gNewSense was a Linux distribution, active from 2006 to 2016. It was based on Debian, and developed with sponsorship from the Free Software Foundation. Its goal was user-friendliness, but with all proprietary and non-free software removed. The Free Software Foundation considered gNewSense to be composed entirely of free software.
William John Sullivan is a software freedom activist, hacker, and writer. John was formerly executive director of the Free Software Foundation (FSF), where he has worked since early 2003. He is also a speaker and webmaster for the GNU Project. He also maintains the Plannermode and delicious-el packages for the GNU Emacs text editor.
The GNU General Public License is a series of widely used free software licenses or copyleft that guarantee end users the four freedoms to run, study, share, and modify the software. The license was the first copyleft for general use and was originally written by Richard Stallman, the founder of the Free Software Foundation (FSF), for the GNU Project. The license grants the recipients of a computer program the rights of the Free Software Definition. These GPL series are all copyleft licenses, which means that any derivative work must be distributed under the same or equivalent license terms. It is more restrictive than the Lesser General Public License and even further distinct from the more widely used permissive software licenses BSD, MIT, and Apache.
The Free Software Foundation (FSF) is a 501(c)(3) non-profit organization founded by Richard Stallman on October 4, 1985, to support the free software movement, with the organization's preference for software being distributed under copyleft terms, such as with its own GNU General Public License. The FSF was incorporated in Boston, Massachusetts, US, where it is also based.
Software Freedom Conservancy, Inc. is an organization that provides a non-profit home and infrastructure support for free and open source software projects. The organization was established in 2006, and as of June 2022, had over 40 member projects.
Karen Sandler is the executive director of the Software Freedom Conservancy, former executive director of the GNOME Foundation, an attorney, and former general counsel of the Software Freedom Law Center. She holds an honorary doctorate from KU Leuven.
Outreachy (previously the Free and Open Source Software Outreach Program for Women) is a program that organizes three-month paid internships with free and open-source software projects for people who are typically underrepresented in those projects. The program is organized by the Software Freedom Conservancy and was formerly organized by The GNOME Project and the GNOME Foundation.
