CopyLeft License : Every Open Source License

Open Software License v. 2.1 This Open Software License (the "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 Open Software License version 2.1 1) Grant of Copyright License. Licensor hereby grants You a world-wide, royalty-free, non-exclusive, perpetual, sublicenseable license to do the following: to reproduce the Original Work in copies; to prepare derivative works ("Derivative Works") based upon the Original Work; to distribute copies of the Original Work and Derivative Works to the public, with the proviso that copies of Original Work or Derivative W...

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...

Oculus VR, Inc. Software Development Kit License Agreement Copyright © 2014 Oculus VR, Inc. All rights reserved. The text of this may be found at: http://www.oculusvr.com/licenses/LICENSE-3.1. Human-Readable Summary* You are Free to: Use, modify, and distribute the Oculus VR Rift SDK in source and binary form with your applications/software. With the Following Restrictions: - You can only distribute or re-distribute the source code to LibOVR in whole, not in part. - Modifications to the Oculus VR Rift SDK in source or binary form must be shared with Oculus VR. - If your applications cause health and safety issues, you may lose your right to use the Oculus VR Rift SDK, including LibOVR. - The Oculus VR ...

Copyright (C) 1994-2006 The XFree86 Project, Inc. All rights reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: 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 th...

GNU Simpler Free Documentation License Discussion Draft 1 of Version 1, 25 September 2006 THIS IS A DRAFT, NOT A PUBLISHED VERSION OF THE GNU SIMPLER FREE DOCUMENTATION LICENSE Copyright (C) 2000, 2002, 2006 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 0. WHAT THIS LICENSE DOES The purpose of this License is to make a work of authorship free. This means giving all users the four essential freedoms: 0. The freedom to read, view, or use the work. 1. The freedom to change the work, with access to formats which make that convenient to do. ...