Knowledge Tree
Relations (1)
cross_type 2.58 — strongly supporting 5 facts
Richard Stallman is the primary architect of the copyleft movement, having adopted the term in 1984 [1] and defined its core philosophy of using copyright law to ensure software freedom {fact:2, fact:4}. Furthermore, he developed the GNU General Public License, which serves as the foundational implementation of copyleft licensing {fact:3, fact:5}.
Facts (5)
Sources
Open-source license - Wikipedia en.wikipedia.org 2 facts
quoteRichard Stallman stated that "the central idea of copyleft is to use copyright law, but flip it over to serve the opposite of its usual purpose: instead of a means of privatizing software, [copyright] becomes a means of keeping software free."
accountThe term "Copyleft" and the slogan "All rights reversed" were used by Principia Discordia and Tiny BASIC before Richard Stallman adopted the term in 1984 for the GNU operating system after receiving a manual with a "Copyleft Ⓛ" sticker from programmer Don Hopkins.
Open Hardware Licenses - The Turing Way book.the-turing-way.org 1 fact
claimThe GNU General Public License (GPL), developed by Richard Stallman, is a popular copyleft license used for software within open source hardware projects.
What Is Open Source Software? - IBM ibm.com 1 fact
claimThe GNU General Public License (GPL), innovated by Richard Stallman, is the first copyleft software license and requires that anyone who enhances the source code must publish their edited version freely to all.
Open-source software - Wikipedia en.wikipedia.org 1 fact
claimRichard Stallman created the concept of copyleft to prevent his work from being used in proprietary software, allowing the use of his work by anyone under specific terms.