Common Public License

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Common Public License
AuthorIBM
Latest version1.0
PublisherIBM
PublishedMay 2001
DFSG compatibleYes[1]
FSF approvedYes[2]
OSI approvedYes[3]
GPL compatibleNo[2]
CopyleftLimited[2]
Linking from code with a different licenseYes

In computing, the Common Public License (CPL) is a free software / open-source software license published by IBM. The Free Software Foundation and Open Source Initiative have approved the license terms of the CPL.

Definition[edit]

The CPL has the stated aims of supporting and encouraging collaborative open-source development while still retaining the ability to use the CPL'd content with software licensed under other licenses, including many proprietary licenses. The Eclipse Public License (EPL) consists of a slightly modified version of the CPL.

The CPL has some terms that resemble those of the GNU General Public License (GPL), but some key differences exist. A similarity relates to distribution of a modified computer program: under either license (CPL or GPL), one must make the source code of a modified program available to others.

CPL, like the GNU Lesser General Public License, allows non-CPL-licensed software to link to a library under CPL without requiring the linked source code to be made available to the licensee.

CPL lacks compatibility with both versions of the GPL because it has a "choice of law" section in section 7, which restricts legal disputes to a certain court. Another source of incompatibility is the differing copyleft requirements.[2]

To reduce the number of open source licenses, IBM and Eclipse Foundation agreed upon using solely the Eclipse Public License in the future.[4] Open Source Initiative therefore lists the Common Public License as deprecated and superseded by EPL.

Projects using the Common Public License[edit]

See also[edit]

References[edit]

  1. ^ List of DFSG (Debian Free Software Guidelines) approved Licenses
  2. ^ a b c d "Various Licenses and Comments about Them". Retrieved 2016-10-05.
  3. ^ "Open Source Licenses by Category". Retrieved 2016-10-05.
  4. ^ Mike Milinkovich - One Small Step Towards Reducing License Proliferation

External links[edit]