- Zope Public License v2.0 at the Open Source Initiative
- Zope Public License v2.1 at the Free Software Foundation
- Zope Public License v2.1 at the Zope Foundation
| Latest version | 2.1 |
|---|---|
| SPDX identifier | ZPL-1.1, ZPL-2.0, ZPL-2.1 |
| Debian FSG compatible | Yes |
| FSF approved | Yes[1] |
| OSI approved | Yes |
| GPL compatible | 1.0 No,[2] 2.x Yes[1] |
| Copyleft | No[1] |
Zope Public License is a free software license, used primarily for the Zope application server software. The license is similar to the well-known BSD license, however the ZPL also adds clauses prohibiting trademark use and requiring documentation of all changes.