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This is an accepted version of this page This is the latest accepted revision, reviewed on 2 February 2025. Software licensed to ensure source code usage rights Open-source software shares similarities with free software and is part of the broader term free and open-source software. For broader coverage of this topic, see open-source-software movement. A screenshot of Manjaro Linux running the ...
Openmoko: a family of open-source mobile phones, including the hardware specification and the operating system. OpenRISC: an open-source microprocessor family, with architecture specification licensed under GNU GPL and implementation under LGPL. Sun Microsystems's OpenSPARC T1 Multicore processor. Sun has released it under GPL. [48]
The Open Source Definition is the most widely used definition for open-source software, [22] and is often used as a standard for whether a project is open source. [17] It and the official definitions of free software by the Free Software Foundation (FSF) essentially cover the same software licenses .
"Free and open-source software" (FOSS) is an umbrella term for software that is considered free software and/or open-source software. [1] The precise definition of the terms "free software" and "open-source software" applies them to any software distributed under terms that allow users to use, modify, and redistribute said software in any manner they see fit, without requiring that they pay ...
There are licenses accepted by the OSI which are not free as per the Free Software Definition. The Open Source Definition allows for further restrictions like price, type of contribution and origin of the contribution, e.g. the case of the NASA Open Source Agreement, which requires the code to be "original" work.
FOSS is an inclusive umbrella term encompassing free software and open-source software. The rights guaranteed by FOSS originate from the "Four Essential Freedoms" of The Free Software Definition and the criteria of The Open Source Definition. All FOSS must have publicly available source code, but not all source-available software is FOSS.
The following outline is provided as an overview of and topical guide to free software and the free software movement: . Free software – software which can be run, studied, examined, modified, and redistributed freely (without any cost).
This category contains operating systems that are described as "free software" or "open-source software". There are multiple licenses possible for both types; licenses that specify what can and cannot be done with the software.