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.

Copyright (c) 2008 The NetBSD Foundation, Inc. All rights reserved. This code is derived from software contributed to The NetBSD Foundation by 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. 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. THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR I...

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 Hacktivismo Enhanced-Source Software License Agreement Everyone is permitted to copy and distribute verbatim copies of this license document. You may use content from this license document as source material for your own license agreement, but you may not use the name "Hacktivismo Enhanced-Source Software License Agreement ," ("HESSLA") or any confusingly similar name, trademark or service-mark, in connection with any license agreement that is not either (1) a verbatim copy of this License Agreement, or (2) a license agreement that contains only additional terms expressly permitted by The HESSLA. INTRODUCTORY STATEMENT Software that Hacktivismo[fn1] releases under this License Agreement is inten...

The Definition An open software service is one: Whose data is open as defined by the Open Knowledge Definition with the exception that where the data is personal in nature the data need only be made available to the user (i.e. the owner of that account). Whose source code is: Free/Open Source Software (that is available under a license in the OSI or FSF approved list — see note 3). Made available to the users of the service.

Vovida Software License v. 1.0 This license applies to all software incorporated in the "Vovida Open Communication Application Library" except for those portions incorporating third party software specifically identified as being licensed under separate license. The Vovida Software License, Version 1.0 Copyright (c) 2000 Vovida Networks, Inc. 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. Redistributions in binary form must reproduce the above copyright notice, t...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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