Open Publication License
| Author | Eric S. Raymond, David A. Wiley, Tim O'Reilly |
|---|---|
| Latest version | 1.0 |
| Publisher | Open Content Project |
| Published | Current version: June 08, 1999 |
| SPDX identifier | OPUBL-1.0 |
| Debian FSG compatible | No |
| FSF approved | Yes, under certain conditions (see below) |
| OSI approved | No |
| GPL compatible | No |
The Open Publication License (OPL) was published by the Open Content Project in 1999 as a public copyright license for documents. It superseded the Open Content License, which was published by the Open Content Project in 1998. Starting around 2002–2003, it began to be superseded, in turn, by the Creative Commons licenses.