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Subject: AL2 vs BSD and AL2 vs LGPL - msg#00043List: java.vm.sablevm.develI'll try (this is hard for me, when it comes to licenses) to reply in a few sentences. AL2 vs BSD : Both are very permissive. Mostly, you can do whatever you want with the code, even license it under a different license, and distribute it in binary form only, as long as you also provide the copyright and license notices. Both of these licenses are compatible to many other free and open source software licenses. There are a few notable differences, though: - The BSD text is quite imprecise, e.g. "... in the documentation and/or other materials..." : What if there is no documentation nor other materials? Are you then relieved of the obligations of the BSD license? - The BSD license is only a Copyright license. The AL2 license explicitly covers 3 aspects of intellectual property, namely: copyright, patents, and trade marks. - The BSD is GPL compatible. The AL2 was designed to be GPL compatible, but the FSF thinks that it is not. The FSF is working on the GPL 3.0 which should be AL2 compatible. See: http://www.apache.org/licenses/GPL-compatibility.html http://gplv3.fsf.org/ AL2 vs LGPL : Mainly, LGPL is a "weak copyleft" license. Mainly, you can link the LGPL code with other code and distribute binaries, as long as you also redistribute the source code of the LGPL part. The AL2 has no source code redistribution requirement; it is much more "permissive". Many people (including some at the FSF!) think that the LGPL is impractical for embedded systems. I like the fact that the AL2 covers various aspects of intellectual property (IP) in a clear and concise vocabulary. You'll find a definition of IP at: http://strategis.gc.ca/sc_mrksv/cipo/welcome/welcom-e.html Hoping this was short enough. Couldn't make it shorter. :-) Etienne David Bélanger wrote: > Could someone summarize the differences between: > AL2 vs BSD or AL2 vs LGPL > in a few sentences. -- Etienne M. Gagnon, Ph.D. http://www.info2.uqam.ca/~egagnon/ SableVM: http://www.sablevm.org/ SableCC: http://www.sablecc.org/
SableVM-devel mailing list SableVM-devel@xxxxxxxxxxx http://sablevm.org/lists/control/listinfo/sablevm-devel Thread at a glance:
Previous Message by Date: click to view message previewRe: Contributing The SableVM Virtual Machine To The Harmony ProjectI agree to the relicensing of my code in SableVM, including SableJIT, to the Apache Licence 2.0. David On Mon, Mar 20, 2006 at 09:12:07PM -0500, Etienne Gagnon wrote: > Hi all! > > I have been in informal discussions, lately, with the Harmony project, > an "incubation" project of the Apache Software Foundation (ASF). If you > have not heard of it, the Harmony project is an effort to create an > independent implementation of J2SE 5 under the Apache License and to > create a community-developed modular runtime architecture. Here is the > project's URL: > > http://incubator.apache.org/harmony/index.html > > The Harmony project is rapidly gaining visibility, and has been > receiving significant software donations from major industry players and > individuals, the most important being: > - IBM: core Java library classes and VM/library interface > - Intel: security, cryptography, javax.net and unit tests > - Archie Cobbs: JCVM > - Daniel Lydickto: Bootstrap JVM > > I think that it would be in the best interest of the SableVM project to > participate to the Harmony project by adding our virtual machine body of > code to the pool of existing Harmony code, so that it could be mixed and > matched with the code of other virtual machines to create something > bigger than all its parts. The Harmony project would provide a leveling > playing filed for various VM developers to start working together, > instead of wasting their efforts on separate individual VM implementations. > > Given the high quality of previous donations accepted by the Harmony > project, I think that it would be an honor for our code to be accepted > by their project. But, in order to do so, two things must happen: > > a) I must get the permission of all copyright holders to "donate" the > code (more details later about this), and > > b) The Harmony project must accept the donation. I will only propose > such a donation officially if I get the permission of copyright > holders to do so. > > A few technicalities. The Harmony project does not require "Copyright > Assignment"; it merely asks for the copyright holders to do 2 things: > > 1- License the code under the Apache License 2.0 (a very permissive > license): > http://www.apache.org/licenses/LICENSE-2.0 > > 2- Execute a Software Grant (which is a license to allow the ASF to do, > more/less, whatever it wants with the code): > http://www.apache.org/licenses/software-grant.txt > > So, in simple terms: you would still retain your copyright on the code > you wrote, but you would lose any control on the "donated" copy. > > Also, contributing the SableVM code base to Harmony would not mean the > end of the SableVM project, far from that! It would simply lead to the > following development model: > > 1- The day to day maintenance of the general usage virtual machine > would be happen within the Harmony project. > > 2- The SableVM code repository would keep a synchronized copy of the > Harmony trunk as a root for developing new features and doing > research, and for development in sandboxes. > > Personally, I am quite excited at the opportunities. > > So, what do you think? > > > Regards, > > Etienne > > -- > Etienne M. Gagnon, Ph.D. http://www.info2.uqam.ca/~egagnon/ > SableVM: http://www.sablevm.org/ > SableCC: http://www.sablecc.org/ > _______________________________________________ > SableVM-devel mailing list > SableVM-devel@xxxxxxxxxxx > http://sablevm.org/lists/control/listinfo/sablevm-devel -- --- David Bélanger Web page: http://www.cs.mcgill.ca/~dbelan2/ Public key: http://www.cs.mcgill.ca/~dbelan2/public_key.txt Next Message by Date: click to view message previewNew License Update (Final)Hi all, I am glad to report that, with David's recent permission, I have finally receive the permission of 26 authors (including myself) to relicense SableVM under the Apache License 2.0. This does includes all copyright holders of code in the SableVM development trunk, and all active developers. :-) Thanks to all! Etienne -- Etienne M. Gagnon, Ph.D. http://www.info2.uqam.ca/~egagnon/ SableVM: http://www.sablevm.org/ SableCC: http://www.sablecc.org/ signature.asc Description: OpenPGP digital signature _______________________________________________ SableVM-devel mailing list SableVM-devel@xxxxxxxxxxx http://sablevm.org/lists/control/listinfo/sablevm-devel Previous Message by Thread: click to view message previewRe: Contributing The SableVM Virtual Machine To The Harmony ProjectHi all, Could someone summarize the differences between: AL2 vs BSD or AL2 vs LGPL in a few sentences. Thanks, David On Mon, Mar 20, 2006 at 09:12:07PM -0500, Etienne Gagnon wrote: > Hi all! > > I have been in informal discussions, lately, with the Harmony project, > an "incubation" project of the Apache Software Foundation (ASF). If you > have not heard of it, the Harmony project is an effort to create an > independent implementation of J2SE 5 under the Apache License and to > create a community-developed modular runtime architecture. Here is the > project's URL: > > http://incubator.apache.org/harmony/index.html > > The Harmony project is rapidly gaining visibility, and has been > receiving significant software donations from major industry players and > individuals, the most important being: > - IBM: core Java library classes and VM/library interface > - Intel: security, cryptography, javax.net and unit tests > - Archie Cobbs: JCVM > - Daniel Lydickto: Bootstrap JVM > > I think that it would be in the best interest of the SableVM project to > participate to the Harmony project by adding our virtual machine body of > code to the pool of existing Harmony code, so that it could be mixed and > matched with the code of other virtual machines to create something > bigger than all its parts. The Harmony project would provide a leveling > playing filed for various VM developers to start working together, > instead of wasting their efforts on separate individual VM implementations. > > Given the high quality of previous donations accepted by the Harmony > project, I think that it would be an honor for our code to be accepted > by their project. But, in order to do so, two things must happen: > > a) I must get the permission of all copyright holders to "donate" the > code (more details later about this), and > > b) The Harmony project must accept the donation. I will only propose > such a donation officially if I get the permission of copyright > holders to do so. > > A few technicalities. The Harmony project does not require "Copyright > Assignment"; it merely asks for the copyright holders to do 2 things: > > 1- License the code under the Apache License 2.0 (a very permissive > license): > http://www.apache.org/licenses/LICENSE-2.0 > > 2- Execute a Software Grant (which is a license to allow the ASF to do, > more/less, whatever it wants with the code): > http://www.apache.org/licenses/software-grant.txt > > So, in simple terms: you would still retain your copyright on the code > you wrote, but you would lose any control on the "donated" copy. > > Also, contributing the SableVM code base to Harmony would not mean the > end of the SableVM project, far from that! It would simply lead to the > following development model: > > 1- The day to day maintenance of the general usage virtual machine > would be happen within the Harmony project. > > 2- The SableVM code repository would keep a synchronized copy of the > Harmony trunk as a root for developing new features and doing > research, and for development in sandboxes. > > Personally, I am quite excited at the opportunities. > > So, what do you think? > > > Regards, > > Etienne > > -- > Etienne M. Gagnon, Ph.D. http://www.info2.uqam.ca/~egagnon/ > SableVM: http://www.sablevm.org/ > SableCC: http://www.sablecc.org/ > _______________________________________________ > SableVM-devel mailing list > SableVM-devel@xxxxxxxxxxx > http://sablevm.org/lists/control/listinfo/sablevm-devel -- --- David Bélanger Web page: http://www.cs.mcgill.ca/~dbelan2/ Public key: http://www.cs.mcgill.ca/~dbelan2/public_key.txt Next Message by Thread: click to view message previewRe: Contributing The SableVM Virtual Machine To The Harmony ProjectI agree to the relicensing of my code in SableVM, including SableJIT, to the Apache Licence 2.0. David On Mon, Mar 20, 2006 at 09:12:07PM -0500, Etienne Gagnon wrote: > Hi all! > > I have been in informal discussions, lately, with the Harmony project, > an "incubation" project of the Apache Software Foundation (ASF). If you > have not heard of it, the Harmony project is an effort to create an > independent implementation of J2SE 5 under the Apache License and to > create a community-developed modular runtime architecture. Here is the > project's URL: > > http://incubator.apache.org/harmony/index.html > > The Harmony project is rapidly gaining visibility, and has been > receiving significant software donations from major industry players and > individuals, the most important being: > - IBM: core Java library classes and VM/library interface > - Intel: security, cryptography, javax.net and unit tests > - Archie Cobbs: JCVM > - Daniel Lydickto: Bootstrap JVM > > I think that it would be in the best interest of the SableVM project to > participate to the Harmony project by adding our virtual machine body of > code to the pool of existing Harmony code, so that it could be mixed and > matched with the code of other virtual machines to create something > bigger than all its parts. The Harmony project would provide a leveling > playing filed for various VM developers to start working together, > instead of wasting their efforts on separate individual VM implementations. > > Given the high quality of previous donations accepted by the Harmony > project, I think that it would be an honor for our code to be accepted > by their project. But, in order to do so, two things must happen: > > a) I must get the permission of all copyright holders to "donate" the > code (more details later about this), and > > b) The Harmony project must accept the donation. I will only propose > such a donation officially if I get the permission of copyright > holders to do so. > > A few technicalities. The Harmony project does not require "Copyright > Assignment"; it merely asks for the copyright holders to do 2 things: > > 1- License the code under the Apache License 2.0 (a very permissive > license): > http://www.apache.org/licenses/LICENSE-2.0 > > 2- Execute a Software Grant (which is a license to allow the ASF to do, > more/less, whatever it wants with the code): > http://www.apache.org/licenses/software-grant.txt > > So, in simple terms: you would still retain your copyright on the code > you wrote, but you would lose any control on the "donated" copy. > > Also, contributing the SableVM code base to Harmony would not mean the > end of the SableVM project, far from that! It would simply lead to the > following development model: > > 1- The day to day maintenance of the general usage virtual machine > would be happen within the Harmony project. > > 2- The SableVM code repository would keep a synchronized copy of the > Harmony trunk as a root for developing new features and doing > research, and for development in sandboxes. > > Personally, I am quite excited at the opportunities. > > So, what do you think? > > > Regards, > > Etienne > > -- > Etienne M. Gagnon, Ph.D. http://www.info2.uqam.ca/~egagnon/ > SableVM: http://www.sablevm.org/ > SableCC: http://www.sablecc.org/ > _______________________________________________ > SableVM-devel mailing list > SableVM-devel@xxxxxxxxxxx > http://sablevm.org/lists/control/listinfo/sablevm-devel -- --- David Bélanger Web page: http://www.cs.mcgill.ca/~dbelan2/ Public key: http://www.cs.mcgill.ca/~dbelan2/public_key.txt Loading Comments...
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