The Apache Software Foundation uses various licenses to distribute software and documentation, to accept regular contributions from individuals and corporations, and to accept larger grants of existing software products.
These licenses help us achieve our goal of providing reliable and long-lived software products through collaborative open source software development. In all cases, contributors retain full rights to use their original contributions for any other purpose outside of Apache while providing the ASF and its projects the right to distribute and build upon their work within Apache.
Licensing of Distributions
All software produced by The Apache Software Foundation or any of its projects or subjects is licensed according to the terms of the documents listed below.
Apache License, Version 2.0 (current)
The 2.0 version of the Apache License was approved by the ASF in 2004. The goals of this license revision have been to reduce the number of frequently asked questions, to allow the license to be reusable without modification by any project (including non-ASF projects), to allow the license to be included by reference instead of listed in every file, to clarify the license on submission of contributions, to require a patent license on contributions that necessarily infringe the contributor's own patents, and to move comments regarding Apache and other inherited attribution notices to a location outside the license terms (the NOTICE file ).
The result is a license that is supposed to be compatible with other open source licenses, while remaining true to the original goals of the Apache Group and supportive of collaborative development across both nonprofit and commercial organizations. The Apache Software Foundation is still trying to determine if this version of the Apache License is compatible with the GPL.
All packages produced by the ASF are implicitly licensed under the Apache License, Version 2.0, unless otherwise explicitly stated. More developer documentation on how to apply the Apache License to your work can be found in * Applying the Apache License, Version 2.0 *.
Apache License, Version 1.1 (historic)
The 1.1 version of the Apache License was approved by the ASF in 2000. The primary change from the 1.0 license is in the 'advertising clause' (section 3 of the 1.0 license); derived products are no longer required to include attribution in their advertising materials, only in their documentation.
Individual packages licensed under the 1.1 version may have used different wording due to varying requirements for attribution or mark identification, but the binding terms were all the same.
Apache License, Version 1.0 (historic)
This is the original Apache License which applies only to older versions of Apache packages (such as version 1.2 of the Web server).
Contributor License Agreements
The ASF desires that all contributors of ideas, code, or documentation to the Apache projects complete, sign, and submit (via postal mail, fax or email) an Individual Contributor License Agreement (1) (CLA) [ PDF form ]. The purpose of this agreement is to clearly define the terms under which intellectual property has been contributed to the ASF and thereby allow us to defend the project should there be a legal dispute regarding the software at some future time. A signed CLA is required to be on file before an individual is given commit rights to an ASF project.
For a corporation that has assigned employees to work on an Apache project, a Corporate CLA (CCLA) is available for contributing intellectual property via the corporation, that may have been assigned as part of an employment agreement. Note that a Corporate CLA does not remove the need for every developer to sign their own CLA as an individual, to cover any of their contributions which are not owned by the corporation signing the CCLA.
The ICLA is not tied to any employer you may have, so it is recommended to use one's personal email address in the contact details, rather than an @work address.
Your Full name will be published unless you provide an alternative Public name. For example if your full name is Andrew Bernard Charles Dickens, but you wish to be known as Andrew Dickens, please enter the latter as your Public name.
The email address and other contact details are not published.
(1) Please use overwrite mode when typing in the underlined fields. Otherwise the fields will wrap, making the result harder to read.
When an individual or corporation decides to donate a body of existing software or documentation to one of the Apache projects, they need to execute a formal Software Grant Agreement (SGA) with the ASF. Typically, this is done after negotiating approval with the ASF Incubator or one of the PMCs, since the ASF will not accept software unless there is a viable community available to support a collaborative project.
Submitting License Agreements and Grants
Documents may be submitted by traditional postal mail, fax, or email.
If submitting by post, please print, sign, and mail the document to The Apache Software Foundation, Dept. 9660, Los Angeles, CA 90084-9660, U.S.A. Please make a copy and keep for your own records.
If submitting by fax, please print, sign, and fax all pages of the document to +1-919-573-9199. Please send documents right-side-up, first page first; and send only one document per fax.
If submitting by email, please print, sign, scan all pages into a single pdf file, and email the .pdf as an attachment to firstname.lastname@example.org. Please send only one document per email.
If you prefer to sign electronically, please edit the .txt or .pdf file and sign the file by preparing a detached PGP signature. For example,
gpg --armor --detach-sign icla.pdf
The above will create a file icla.pdf.asc. Send both the file and signature as attachments in an email to email@example.com. Please send only one document per email. Please do not submit your public key to Apache.
The files typically are named icla.txt and icla.txt.asc (or icla.pdf and icla.pdf.asc) for individual agreements; ccla.txt and ccla.txt.asc (or ccla.pdf and ccla.pdf.asc) for corporate agreements; software-grant.txt and software-grant.txt.asc for grants.
Please upload your public key to pgpkeys.mit.edu.
For export restriction information, please consult our ASF Export Classifications page.
Trademark and Logo Usage
For ASF trademark and logo usage information, please consult our ASF Trademark Use Policy page.
For answers to frequently asked licensing questions, please consult our Licensing Frequently Asked Questions page.