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Eclipse Public License
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Eclipse Public License
The Eclipse Public License (EPL) is a free and open source software license most notably used for the Eclipse IDE and other projects by the Eclipse Foundation. It replaces the Common Public License (CPL) and removes certain terms relating to litigations related to patents.
The Eclipse Public License is designed to be a business-friendly free software license, and features weaker copyleft provisions than licenses such as the GNU General Public License (GPL). The receiver of EPL-licensed programs can use, modify, copy and distribute the work and modified versions, in some cases being obligated to release their own changes.
The EPL is listed as a free software license by the Free Software Foundation (FSF) and approved by the Open Source Initiative (OSI).
Discussion of a new version of the EPL began in May 2013. Version 2.0 was announced on 24 August 2017.
On 20 January 2021, the license steward for the license was changed from Eclipse.org Foundation, Inc. (Delaware, USA) to Eclipse Foundation AISBL (Brussels, Belgium).
The EPL 1.0 is not compatible with the GPL, and a work created by combining a work licensed under the GPL with a work licensed under the EPL cannot be lawfully distributed. The GPL requires that "[any distributed work] that ... contains or is derived from the [GPL-licensed] Program ... be licensed as a whole ... under the terms of [the GPL]", and that the distributor not "impose any further restrictions on the recipients' exercise of the rights granted". The EPL, however, requires that anyone distributing the work grant every recipient a license to any patents that they might hold that cover the modifications they have made. Because this is a "further restriction" on the recipients, distribution of such a combined work does not satisfy the GPL.
According to article 1(b) of the EPL, additions to the original work may be licensed independently, including under a proprietary license, provided such additions are "separate modules of software" and do not constitute a derivative work. Changes and additions which do constitute a derivative work must be licensed under the same terms and conditions of the EPL, which includes the requirement to make source code available.
Linking to code (for example to a library) licensed under EPL automatically does not mean that your program is a derivative work. Eclipse Foundation interprets the term "derivative work" in a way that is consistent with the definition in the U.S. Copyright Act, as applicable to computer software.
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Eclipse Public License
The Eclipse Public License (EPL) is a free and open source software license most notably used for the Eclipse IDE and other projects by the Eclipse Foundation. It replaces the Common Public License (CPL) and removes certain terms relating to litigations related to patents.
The Eclipse Public License is designed to be a business-friendly free software license, and features weaker copyleft provisions than licenses such as the GNU General Public License (GPL). The receiver of EPL-licensed programs can use, modify, copy and distribute the work and modified versions, in some cases being obligated to release their own changes.
The EPL is listed as a free software license by the Free Software Foundation (FSF) and approved by the Open Source Initiative (OSI).
Discussion of a new version of the EPL began in May 2013. Version 2.0 was announced on 24 August 2017.
On 20 January 2021, the license steward for the license was changed from Eclipse.org Foundation, Inc. (Delaware, USA) to Eclipse Foundation AISBL (Brussels, Belgium).
The EPL 1.0 is not compatible with the GPL, and a work created by combining a work licensed under the GPL with a work licensed under the EPL cannot be lawfully distributed. The GPL requires that "[any distributed work] that ... contains or is derived from the [GPL-licensed] Program ... be licensed as a whole ... under the terms of [the GPL]", and that the distributor not "impose any further restrictions on the recipients' exercise of the rights granted". The EPL, however, requires that anyone distributing the work grant every recipient a license to any patents that they might hold that cover the modifications they have made. Because this is a "further restriction" on the recipients, distribution of such a combined work does not satisfy the GPL.
According to article 1(b) of the EPL, additions to the original work may be licensed independently, including under a proprietary license, provided such additions are "separate modules of software" and do not constitute a derivative work. Changes and additions which do constitute a derivative work must be licensed under the same terms and conditions of the EPL, which includes the requirement to make source code available.
Linking to code (for example to a library) licensed under EPL automatically does not mean that your program is a derivative work. Eclipse Foundation interprets the term "derivative work" in a way that is consistent with the definition in the U.S. Copyright Act, as applicable to computer software.
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