LaTeX Project Public License
| Author | LaTeX project | 
|---|---|
| Latest version | 1.3c | 
| Publisher | LaTeX project | 
| Published | May 4, 2008 | 
| SPDX identifier | LPPL-1.0, LPPL-1.1, LPPL-1.2, LPPL-1.3a, LPPL-1.3c | 
| Debian FSG compatible | Yes | 
| FSF approved | Yes | 
| OSI approved | Yes | 
| GPL compatible | No | 
| Copyleft | No | 
| Linking from code with a different licence | Yes | 
| Website | latex-project | 
The LaTeX Project Public License (LPPL) is a software license originally written for the LaTeX system. Software distributed under the terms of the LPPL can be regarded as free software; however, it is not copylefted.
Besides the LaTeX base system, the LPPL is also used for most third-party LaTeX packages. Software projects other than LaTeX rarely use it.