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Copyleft licences

Creative Commons

CREATIVE COMMONS LICENCES

Creative Commons is a non-profit organization, founded in 2001 and aimed at defining "the spectrum of possibilities between full copyright - all rights reserved - and the public domain - no rights reserved. Our licenses help you keep your copyright while inviting certain uses of your work - a "some rights reserved" copyright."

CC: between copyright and public domain

The key elements of Creative Commons licenses are as follows. They are presented by means of very clear icons.

	Attribution. You let others copy, distribute, display, and perform your copyrighted work - and derivative works based upon it - but only if they give credit the way you request.		Non-commercial. You let others copy, distribute, display, and perform your work - and derivative works based upon it - but for non-commercial purposes only.
	You let others copy, distribute, display, and perform only verbatim copies of your work, not derivative works based upon it.		Share Alike. You allow others to distribute derivative works only under a license identical to the license that governs your work.

Here are the different licences:

The MIT OpenCourseWare is released under the Creative Commons Licence: Attribution - No Commercial - Share Alike

ATTRIBUTION - NON COMMERCIAL - NO DERIVATIVE

You are free:

	to copy, distribute, display, and perform the work,
	to make commercial use of the work,

under the following conditions:

	you must attribute the work in the manner specified by the author or licensor,
	you may not alter, transform, or build upon this work,
	for any reuse or distribution, you must make clear to others the licence terms of this work,
	any of these conditions can be waived if you get permission from the copyright holder.

Your fair use and other rights are in no way affected by the above.

ATTRIBUTION, NO DERIVATIVE

You are free:

	to copy, distribute, display, and perform the work,
	to make commercial use of the work,

under the following conditions:

	you must attribute the work in the manner specified by the author or licensor,
	you may not alter, transform, or build upon this work,
	for any reuse or distribution, you must make clear to others the licence terms of this work,
	any of these conditions can be waived if you get permission from the copyright holder.

Your fair use and other rights are in no way affected by the above.

ATTRIBUTION, NON COMMERCIAL

You are free:

	to copy, distribute, display, and perform the work,
	to make derivatives work,

under the following conditions:

	you must attribute the work in the manner specified by the author or licensor,
	you may not use this work for commercial purposes,
	for any reuse or distribution, you must make clear to others the licence terms of this work,
	any of these conditions can be waived if you get permission from the copyright holder.

Your fair use and other rights are in no way affected by the above.

ATTRIBUTION, SHARE ALIKE

You are free:

	to copy, distribute, display, and perform the work,
	to make derivatives work,
	to make commercial use of the work,

under the following conditions:

	you must attribute the work in the manner specified by the author or licensor,
	if you alter, transform, or build upon this work, you may distribute the resulting work only under a licence identical to this one,
	for any reuse or distribution, you must make clear to others the licence terms of this work,
	any of these conditions can be waived if you get permission from the copyright holder.

Your fair use and other rights are in no way affected by the above.

ATTRIBUTION - NO COMMERCIAL - NO DERIVATIVE

You are free:

to copy, distribute, display, and perform the work,

under the following conditions:

	you must attribute the work in the manner specified by the author or licensor,
	you may not use this work for commercial purposes,
	you may not alter, transform, or build upon this work,
	for any reuse or distribution, you must make clear to others the licence terms of this work,
	any of these conditions can be waived if you get permission from the copyright holder.

Your fair use and other rights are in no way affected by the above.

ATTRIBUTION - NO COMMERCIAL - SHARE ALIKE

You are free:

	to copy, distribute, display, and perform the work,
	to make derivatives work,

under the following conditions:

	you must attribute the work in the manner specified by the author or licensor,
	you may not use this work for commercial purposes,
	if you alter, transform, or build upon this work, you may distribute the resulting work only under a licence identical to this one,
	for any reuse or distribution, you must make clear to others the licence terms of this work,
	any of these conditions can be waived if you get permission from the copyright holder.

Your fair use and other rights are in no way affected by the above.