Despite the name, it is not clear whether this license wouldqualify as “open source”. In addition, it has a requirement for users to indemnify thedeveloper, which is enough to make many users think twice about using itat all. A detaileddiscussion of this license is also available. The PPLshould not be used for software, manuals, or other works that ought tobe free. The PPL has several provisions designed specifically for artisticperformances, and we have nothing against its use for art works;however, people reportedly advocate its use for software too.
Folders and files
It has a copyleft similar to theone found in the Mozilla Public License. Add it in the source files, after the notice that saysthe program is covered by the GNU GPL. However, if you have written a program that uses QPL-covered library(called FOO), and you want to release your program under the GNU GPL,you can easily do that.
However, they all includedclauses that allow you to upgrade to new versions of the license, if youchoose to do so. The SGI Free Software License B version 2.0 is a free softwarelicense. This is a free software license, compatible with the GPL via anexplicit dual-licensing clause.
The license of PINE is not a free software license because it mostlyprohibits the distribution of modified versions. Pleasedon't use these licenses, and we urge you to avoid any software that hasbeen released under them. If source code does not carry a license to give users the fouressential freedoms, then unless it has been explicitly and validlyplaced in the public domain, it is not free software. This is a lax, fairly permissive non-copyleft free softwarelicense with practicalproblems like those of the original BSD license, includingincompatibility with the GNU GPL. However, there is no reason to avoid running programs thathave been released under this license.
Why license notices?
Some developers think that code with no license isautomatically in the public domain. We focus here on licenses that are often mistaken for freesoftware licenses but are, in fact, not free softwarelicenses. A nonfree license is automatically incompatible with the GNU GPL.
Additionally, the license excludes certain users—those whose programs or servers are very widely used. Please don't use this license, and we urge you to avoid anysoftware that has been released under it. Please don't use thislicense, and we urge you to avoid any software that has been betory casino bonus releasedunder it. Please don't use this license, and we urge you to avoid any softwarethat has been released under it.
- In somecountries, users that download code with no license may infringecopyright merely by compiling it or running it.
- Are covered by the Unicode Terms of Use, a different, nonfreelicense that appears on the same page but covers different files.
- It is compatible with the GPL, by an explicit conversionclause.
- However, many other countries have a more rigid approach tocopyright licenses.
- This is a license that Unicode, Inc. has applied to the UnicodeCharacter Database—various data files that developers can use tohelp implement the Unicode standard in their own programs.
- If a source file contains no statement about what itslicense is, then moving it into another context eliminates all traceof that point.
The copyright notice
This license does not permit commercial distribution, and only allowscommercial use under certain circumstances. This license was written for use on a Large Language Model(LLM)—something that generates output by patching together snippets of inputdata without understanding what (if anything) the resulting outputmeans. Even if a country cannot enforce its trade regulations where you live, it can ask the program's developer to sue you.
Code written by employees of the US government is a specialexception, since US copyright law explicitly puts that in the publicdomain; but this does not apply to works that the US pays a company towrite. Some countries allow authors to put code in the public domain, butthat requires explicit action which can vary among jurisdictions. The document with which they do so is calleda free software license. Absent alicense to grant users freedom, they don't have any.
GPL-Incompatible Free Software Licenses
Note that the latest version of OpenLDAP hasa different license that is compatible withthe GNU GPL. This is a free software license that is essentially the same as theMozilla Public License version 1.1. If partof a program allows the GNU GPL as an alternate choice, or any otherGPL-compatible license as an alternate choice, that part of the programhas a GPL-compatible license. This is a free software license, but it is incompatible with the GNU GPLbecause of its choice of law clause. The LPPL says that some files, in certain versions of LaTeX, may haveadditional restrictions, which could render them nonfree.
Upgrading Polr
This is a permissive non-copyleft free software license. The Academic Free License is a free software license, not copyleft, andincompatible with the GNU GPL. The Affero General Public License is a free software license,copyleft, and incompatible with the GNU GPL.
- Despite the name, it is not clear whether this license wouldqualify as “open source”.
- If the package says that some fonts inthe package may not be modified, then the package is nonfree.Otherwise the package is free.
- It differs from earlier versions as it does not include specificreferences to Unicode.
- This license does not qualify as free, because there arerestrictions on distributing modified versions.
- These two licenses are frequentlyconfused, as the Open Content License is often referred to as the“OPL”.
- There is no legal requirement to register your copyright with anyone;simply writing the program makes it copyrighted.
The Affero notice
This is a free software license, compatible with version 3 of theGNU GPL. Its terms effectivelyconsist of the terms of GPLv3, with an additional paragraph in section 13to allow users who interact with the licensed software over a network toreceive the source for that program. The following licenses qualify as free software licenses, andare compatiblewith the GNU GPL. Theproliferation of different free software licenses is a significantproblem in the free software community today, both for users anddevelopers. You can use our publications to understand how GNU licenses work or helpyou advocate for free software, but they are not legal advice. The basic terms of the license permit users to run, study, share, and modify software.
It also causes major practical inconvenience, because modifiedsources can only be distributed as patches. We recommend that you not use this license for anything except PHPadd-ons. It is incompatible with the GNU GPL because itincludes strong restrictions on the use of “PHP” in thename of derived products. We recommend using GNUTLS instead of OpenSSL in software you write.However, there is no reason not to use OpenSSL and applications thatwork with OpenSSL. It also has anadvertising clause like the original BSDlicense and the Apache 1 license.