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Free software 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.
The Free Software Definition written by Richard Stallman and published by the Free Software Foundation (FSF), defines free software as being software that ensures that the end users have freedom in using, studying, sharing and modifying that software. The term "free" is used in the sense of "free speech," not of "free of charge." The earliest-known publication of the definition was in the February 1986 edition of the now-discontinued GNU's Bulletin publication by the FSF. The canonical source for the document is in the philosophy section of the GNU Project website. As of April 2008, it is published in 39 languages. The FSF publishes a list of licences which meet this definition.
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 Cathedral and the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary is an essay, and later a book, by Eric S. Raymond on software engineering methods, based on his observations of the Linux kernel development process and his experiences managing an open source project, fetchmail. It examines the struggle between top-down and bottom-up design. The essay was first presented by the author at the Linux Kongress on May 27, 1997 in Würzburg (Germany) and was published as part of the same‑titled book in 1999.
Gosling Emacs is a discontinued Emacs implementation written in 1981 by James Gosling in C.
Open-source software (OSS) is computer software that is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software and its source code to anyone and for any purpose. Open-source software may be developed in a collaborative public manner. Open-source software is a prominent example of open collaboration, meaning any capable user is able to participate online in development, making the number of possible contributors indefinite. The ability to examine the code facilitates public trust in the software.
Within the free software and the open-source software communities there is controversy over whether to refer to computer operating systems that use a combination of GNU software and the Linux kernel as "GNU/Linux" or "Linux" systems.
Free as in Freedom: Richard Stallman's Crusade for Free Software (ISBN 0-596-00287-4) is a free book licensed under the GNU Free Documentation License about the life of Richard Stallman, written by Sam Williams and published by O'Reilly Media on March 1, 2002.
Lisp Machines, Inc. was a company formed in 1979 by Richard Greenblatt of MIT's Artificial Intelligence Laboratory to build Lisp machines. It was based in Cambridge, Massachusetts.
Bradley M. Kuhn is a free software activist from the United States.
The Free Software Foundation of India (FSFI) is the Indian sister organisation to the US-based Free Software Foundation. It was founded in Thiruvananthapuram (Trivandrum) in 2001 as a non-profit Company. The FSFI advocates to promote the use and development of free software in India. This includes educating people about free software, including how it can help the economy of a developing country like India. FSF India regards non-free software as not a solution, but a problem to be solved. Free software is sometimes locally called swatantra software in India.
The free-culture movement is a social movement that promotes the freedom to distribute and modify the creative works of others in the form of free content or open content without compensation to, or the consent of, the work's original creators, by using the Internet and other forms of media.
Alternative terms for free software, such as open source, FOSS, and FLOSS, have been a controversial issue among free and open-source software users from the late 1990s onwards. These terms share almost identical licence criteria and development practices.
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 a manner such that its users receive the freedoms 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, developed the GNU Compiler Collection and GNU Emacs, and wrote the GNU General Public License.
In computer software, a time bomb is part of a computer program that has been written so that it will start or stop functioning after a predetermined date or time is reached. The term "time bomb" does not refer to a program that stops functioning a specific number of days after it is installed; instead, the term "trialware" applies. Time bombs are commonly used in beta (pre-release) software when the manufacturer of the software does not want the beta version being used after the final release date. One example of time bomb software would be Microsoft's Windows Vista Beta 2, which was programmed to expire on May 31, 2007. The time limits on time bomb software are not usually as heavily enforced as they are on trial software, since time bomb software does not usually implement secure clock functions.
Thomas Bushnell, BSG, formerly known as Michael Bushnell, is a software developer and Gregorian friar. He was the founder and principal architect of GNU's official kernel project, GNU Hurd. Bushnell was Hurd's official maintainer from its instigation until November 2003. Bushnell currently maintains Debian packages, and is employed by Google LLC since July 2010. He is a member of Saint Mark's Episcopal Church in Glendale, CA.
Copyleft is the practice of granting the right to freely distribute and modify intellectual property with the requirement that the same rights be preserved in derivative works created from that property. Copyleft in the form of licenses can be used to maintain copyright conditions for works ranging from computer software, to documents, art, scientific discoveries and even certain patents. Copyleft is an arrangement whereby software or artistic work may be used, modified, and distributed freely on condition that anything derived from it is bound by the same conditions.
Free Software, Free Society: Selected Essays of Richard M. Stallman is a collection of writings by Richard Stallman. It introduces the subject of history and development of the GNU Project and the Free Software Foundation, explains authors philosophical position on Free Software movement, deals with the topics of software ethics, copyright and patent laws, as well as business practices in application to computer software. The author proposes Free software licenses as a solution to social issues created by proprietary software and described in essays.
The Xerox 9700 was a high-end laser printer manufactured by Xerox Corporation beginning in 1977. Based on the Xerox 9200 copier, the 9700 printed at 300 dots-per-inch on cut-sheet paper at up to two pages per second (pps), one- or two-sided, that is simplex or duplex, landscape or portrait.
References
- ↑ Williams, Sam. (2002). Free as in Freedom: Richard Stallman's crusade for free software. O'Reilly. Chapter 14
