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.

German Free Software License (c) Ministry of Science and Research, State of North-Rhine Westphalia 2004 Developed and created by Axel Metzger and Till Jaeger, Institut für Rechtsfragen der Freien und Open Source Software (Institute for Legal Issues On Free and Open Source Software), . Preamble Software is more than a mere economic asset. It is the technical foundation of the information society. Therefore, the issue of the public share in software is of particular importance. Conventionally licensed computer programs are distributed in object code form only, and the user is not entitled to modify or pass on the program to third parties. The license model for Free Software (synonym "Open Source Software"), however...

Hybrid BSD (half BSD, half zlib) This program, "bzip2", the associated library "libbzip2", and all documentation, are copyright (C) 1996-2006 Julian R Seward. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 3. Altered source versions must be plai...

Academic Free License Version 1.1 This Academic Free License applies to any original work of authorship (the "Original Work") whose owner (the "Licensor") has placed the following notice immediately following the copyright notice for the Original Work: "Licensed under the Academic Free License version 1.1." Grant of License. Licensor hereby grants to any person obtaining a copy of the Original Work ("You") a world-wide, royalty-free, non-exclusive, perpetual, non-sublicenseable license (1) to use, copy, modify, merge, publish, perform, distribute and/or sell copies of the Original Work and derivative works thereof, and (2) under patent claims owned or controlled by the Licensor that are embodied in the Original Work as furn...

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means. In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law. THE SOFTWARE IS PROVIDED "AS IS", W...

Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All rights reserved. License to copy and use this software is granted provided that it is identified as the "RSA Data Security, Inc. MD5 Message-Digest Algorithm" in all material mentioning or referencing this software or this function. License is also granted to make and use derivative works provided that such works are identified as "derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm" in all material mentioning or referencing the derived work. RSA Data Security, Inc. makes no representations concerning either the merchantability of this software or the suitability of this software for any particular purpose. It is provided "as is" without expres...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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