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OPEN TOM PUBLIC LICENSE (OTPL)
Added 2026-08-29
SoftwareCustomReview Tracked
License Review Status from OSI
👤 Bill Moran🗓️ First Submitted: 2003-02-14📅 8512 days💬 12 Events
Latest event👤 Josh Berkus📅 2026-06-05Discuss
Questions whether an existing license could be used instead, argues the license is actually soft copyleft rather than permissive, and notes the source distribution requirement seems outdated.Full Text
OPEN TOM PUBLIC LICENSE (OTPL)
Version 1.2
Copyright (c) [year] [copyright holder name]
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. Attribution and License Retention.
All copies of the Software, in whole or in part, including modified or
unmodified versions, must retain the above copyright notice, this entire
license text, and the following disclaimer in the documentation and/or
other materials provided with the distribution.
2. Source Code Inclusion for Binary Distribution.
If the Software (or a work containing the Software) is distributed in
compiled, executable, binary, or any non-source form (including but not
limited to executable files, installers, container images, mobile
applications, or embedded systems), such distribution must be accompanied
by the complete corresponding source code of the Software as provided by
the original copyright holder. The source code may be provided in any
reasonable and commonly used format or medium, including but not limited
to: a ZIP, RAR, 7z archive; a directory containing the source files; or
any other machine-readable format that allows the recipient to
conveniently access and inspect the source code. Modified source code need
not be disclosed unless the modifier chooses to do so.
3. Patent License.
Each contributor hereby grants to each recipient a perpetual, worldwide,
non-exclusive, no-charge, royalty-free, irrevocable (except as stated in
this section) patent license to make, have made, use, offer to sell, sell,
import, and otherwise transfer the Software, where such license applies
only to those patent claims licensable by such contributor that are
necessarily infringed by their contribution(s) alone or by combination of
their contribution(s) with the Software to which such contribution(s) was
submitted. If any recipient institutes patent litigation against any
entity (including a cross-claim or counterclaim in a lawsuit) alleging
that the Software or a contribution incorporated within the Software
constitutes direct or contributory patent infringement, then any patent
licenses granted to that recipient under this License shall terminate as
of the date such litigation is filed.
4. No Responsibility for Derivative Works.
The copyright holder and contributors shall not be held responsible or
liable for any consequences arising from derivative works, modifications,
or any works based on the Software. Any claim, demand, damages, or other
liability arising from or related to such derivative works shall be solely
the responsibility of the party who created, distributed, or used such
derivative work, and not the copyright holder or contributors.
5. Disclaimer of Warranty.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING
FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.