-*- mode: outline; fill-column:78 -*-* The Open Source Definition (Annotated)Version 1.9The indented, italicized sections below appear as annotations to the Open SourceDefinition (OSD) and are not a part of the OSD. A plain version of the OSD withoutannotations can be found here. IntroductionOpen source doesn't just mean access to the source code. The distribution terms ofopen-source software must comply with the following criteria:1. Free RedistributionThe license shall not restrict any party from selling or giving away the software as acomponent of an aggregate software distribution containing programs from several differentsources. The license shall not require a royalty or other fee for such sale.Rationale: By constraining the license to require free redistribution, we eliminate thetemptation to throw away many long-term gains in order to make a few short-term salesdollars. If we didn't do this, there would be lots of pressure for cooperators to defect.2. Source CodeThe program must include source code, and must allow distribution in source code as wellas compiled form. Where some form of a product is not distributed with source code, theremust be a well-publicized means of obtaining the source code for no more than a reasonablereproduction cost preferably, downloading via the Internet without charge. The source codemust be the preferred form in which a programmer would modify the program. Deliberatelyobfuscated source code is not allowed. Intermediate forms such as the output of apreprocessor or translator are not allowed.Rationale: We require access to un-obfuscated source code because you can't evolveprograms without modifying them. Since our purpose is to make evolution easy, we requirethat modification be made easy.3. Derived WorksThe license must allow modifications and derived works, and must allow them to bedistributed under the same terms as the license of the original software.Rationale: The mere ability to read source isn't enough to support independent peer reviewand rapid evolutionary selection. For rapid evolution to happen, people need to be able toexperiment with and redistribute modifications.4. Integrity of The Author's Source CodeThe license may restrict source-code from being distributed in modified form only if thelicense allows the distribution of "patch files" with the source code for the purpose ofmodifying the program at build time. The license must explicitly permit distribution ofsoftware built from modified source code. The license may require derived works to carry adifferent name or version number from the original software.Rationale: Encouraging lots of improvement is a good thing, but users have a right to knowwho is responsible for the software they are using. Authors and maintainers havereciprocal right to know what they're being asked to support and protect theirreputations.Accordingly, an open-source license must guarantee that source be readily available, butmay require that it be distributed as pristine base sources plus patches. In this way,"unofficial" changes can be made available but readily distinguished from the base source.5. No Discrimination Against Persons or GroupsThe license must not discriminate against any person or group of persons.Rationale: In order to get the maximum benefit from the process, the maximum diversity ofpersons and groups should be equally eligible to contribute to open sources. Therefore weforbid any open-source license from locking anybody out of the process.Some countries, including the United States, have export restrictions for certain types ofsoftware. An OSD-conformant license may warn licensees of applicable restrictions andremind them that they are obliged to obey the law; however, it may not incorporate suchrestrictions itself.6. No Discrimination Against Fields of EndeavorThe license must not restrict anyone from making use of the program in a specific field ofendeavor. For example, it may not restrict the program from being used in a business, orfrom being used for genetic research.Rationale: The major intention of this clause is to prohibit license traps that preventopen source from being used commercially. We want commercial users to join our community,not feel excluded from it.7. Distribution of LicenseThe rights attached to the program must apply to all to whom the program is redistributedwithout the need for execution of an additional license by those parties.Rationale: This clause is intended to forbid closing up software by indirect means such asrequiring a non-disclosure agreement.8. License Must Not Be Specific to a ProductThe rights attached to the program must not depend on the program's being part of aparticular software distribution. If the program is extracted from that distribution andused or distributed within the terms of the program's license, all parties to whom theprogram is redistributed should have the same rights as those that are granted inconjunction with the original software distribution.Rationale: This clause forecloses yet another class of license traps.9. License Must Not Restrict Other SoftwareThe license must not place restrictions on other software that is distributed along withthe licensed software. For example, the license must not insist that all other programsdistributed on the same medium must be open-source software.Rationale: Distributors of open-source software have the right to make their own choicesabout their own software.Yes, the GPL is conformant with this requirement. Software linked with GPLed librariesonly inherits the GPL if it forms a single work, not any software with which they aremerely distributed.10. License Must Be Technology-NeutralNo provision of the license may be predicated on any individual technology or style ofinterface.Rationale: This provision is aimed specifically at licenses which require an explicitgesture of assent in order to establish a contract between licensor and licensee.Provisions mandating so-called "click-wrap" may conflict with important methods ofsoftware distribution such as FTP download, CD-ROM anthologies, and web mirroring; suchprovisions may also hinder code re-use. Conformant licenses must allow for the possibilitythat (a) redistribution of the software will take place over non-Web channels that do notsupport click-wrapping of the download, and that (b) the covered code (or re-used portionsof covered code) may run in a non-GUI environment that cannot support popup dialogues.* Social Contract with the Free Software CommunityVersion 1.11. Debian will remain 100% freeWe provide the guidelines that we use to determine if a work is free in the documententitled The Debian Free Software Guidelines. We promise that the Debian system and allits components will be free according to these guidelines. We will support people whocreate or use both free and non-free works on Debian. We will never make the systemrequire the use of a non-free component.2. We will give back to the free software communityWhen we write new components of the Debian system, we will license them in a mannerconsistent with the Debian Free Software Guidelines. We will make the best system we can,so that free works will be widely distributed and used. We will communicate things such asbug fixes, improvements and user requests to the upstream authors of works included in oursystem.3. We will not hide problemsWe will keep our entire bug report database open for public view at all times. Reportsthat people file online will promptly become visible to others.4. Our priorities are our users and free softwareWe will be guided by the needs of our users and the free software community. We will placetheir interests first in our priorities. We will support the needs of our users foroperation in many different kinds of computing environments. We will not object tonon-free works that are intended to be used on Debian systems, or attempt to charge a feeto people who create or use such works. We will allow others to create distributionscontaining both the Debian system and other works, without any fee from us. In furtheranceof these goals, we will provide an integrated system of high-quality materials with nolegal restrictions that would prevent such uses of the system.5. Works that do not meet our free software standardsWe acknowledge that some of our users require the use of works that do not conform to theDebian Free Software Guidelines. We have created contrib and non-free areas in our archivefor these works. The packages in these areas are not part of the Debian system, althoughthey have been configured for use with Debian. We encourage CD manufacturers to read thelicenses of the packages in these areas and determine if they can distribute the packageson their CDs. Thus, although non-free works are not a part of Debian, we support their useand provide infrastructure for non-free packages (such as our bug tracking system andmailing lists).* The Debian Free Software Guidelines (DFSG) 1. Free RedistributionThe license of a Debian component may not restrict any party from selling or giving awaythe software as a component of an aggregate software distribution containing programs fromseveral different sources. The license may not require a royalty or other fee for suchsale. 2. Source CodeThe program must include source code, and must allow distribution in source code as wellas compiled form.3. Derived WorksThe license must allow modifications and derived works, and must allow them to bedistributed under the same terms as the license of the original software.4. Integrity of The Author's Source CodeThe license may restrict source-code from being distributed in modified form _only_ if thelicense allows the distribution of patch files with the source code for the purpose ofmodifying the program at build time. The license must explicitly permit distribution ofsoftware built from modified source code. The license may require derived works to carry adifferent name or version number from the original software. (This is a compromise. TheDebian group encourages all authors not to restrict any files, source or binary, frombeing modified.)5. No Discrimination Against Persons or GroupsThe license must not discriminate against any person or group of persons.6. No Discrimination Against Fields of EndeavorThe license must not restrict anyone from making use of the program in a specific field ofendeavor. For example, it may not restrict the program from being used in a business, orfrom being used for genetic research.7. Distribution of LicenseThe rights attached to the program must apply to all to whom the program is redistributedwithout the need for execution of an additional license by those parties.8. License Must Not Be Specific to DebianThe rights attached to the program must not depend on the program's being part of a Debiansystem. If the program is extracted from Debian and used or distributed without Debian butotherwise within the terms of the program's license, all parties to whom the program isredistributed should have the same rights as those that are granted in conjunction withthe Debian system.9. License Must Not Contaminate Other SoftwareThe license must not place restrictions on other software that is distributed along withthe licensed software. For example, the license must not insist that all other programsdistributed on the same medium must be free software.10. Example LicensesThe GPL, BSD, and Artistic licenses are examples of licenses that we consider free.* The Free Software DefinitionFree software is a matter of the users' freedom to run, copy, distribute, study, changeand improve the software. More precisely, it refers to four kinds of freedom, for theusers of the software: * The freedom to run the program, for any purpose (freedom 0). * The freedom to study how the program works, and adapt it to your needs (freedom 1). Access to the source code is a precondition for this. * The freedom to redistribute copies so you can help your neighbor (freedom 2). * The freedom to improve the program, and release your improvements to the public, so that the whole community benefits (freedom 3). * Access to the source code is a precondition for this.