CopyLeft License : Every Open Source License

Welcome to CopyLeftLicense.com! Here you will find an archive of all the copyleft and open source licenses that have been published in the past. From Beerware Licensing, where you need to buy a beer for the open source programmer if you see them in a bar, to the fine-tuned and legally-curated Berkeley Software Distribution (BSD) License, we have it all. By knowing where we've come from, we might be able to learn where to go!

This archive contains 729 texts, with 682,528 words or 4,889,496 characters.

Licenses : Open Source and CopyLeft Licenses

A collection of open source and copyleft licenses.

Attribution Assurance License Copyright (c) 2002 by AUTHOR PROFESSIONAL IDENTIFICATION * URL "PROMOTIONAL SLOGAN FOR AUTHOR'S PROFESSIONAL PRACTICE" All Rights Reserved ATTRIBUTION ASSURANCE LICENSE (adapted from the original BSD license) Redistribution and use in source and binary forms, with or without modification, are permitted provided that the conditions below are met. These conditions require a modest attribution to (the "Author"), who hopes that its promotional value may help justify the thousands of dollars in otherwise billable time invested in writing this and other freely available, open-source software. 1. Redistributions of source code, in whole or part and with or without modification (the "Code"), must pro...

Copyright (c) 1998, 1999 Henry Spencer. All rights reserved. Development of this software was funded, in part, by Cray Research Inc., UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics Corporation, none of whom are responsible for the results. The author thanks all of them. Redistribution and use in source and binary forms - with or without modification - are permitted for any purpose, provided that redistributions in source form retain this entire copyright notice and indicate the origin and nature of any modifications. I'd appreciate being given credit for this package in the documentation of software which uses it, but that is not a requirement. THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLI...

The Sleepycat License Copyright (c) 1990-1999 Sleepycat Software. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Redistributions in any form must be accompanied by information on how to obtain complete source code for the DB software and any accompanying software th...

Artistic License 2.0 Copyright (c) 2000-2006, The Perl Foundation. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble This license establishes the terms under which a given free software Package may be copied, modified, distributed, and/or redistributed. The intent is that the Copyright Holder maintains some artistic control over the development of that Package while still keeping the Package available as open source and free software. You are always permitted to make arrangements wholly outside of this license directly with the Copyright Holder of a given Package. If the terms of this license do not permit the full use that you propose to ma...


• "The Software shall be used for Good, not Evil." (From : JSON License.)

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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