# Licensing

 This page describes the ““legal”” structure of SciJava projects. For information on their ““technical”” structure, see Architecture. For information on their ““social”” structure, see Governance.

Overview
Open Source
Apache
BSD
GPL
LGPL
MIT
Public domain
Proprietary
BIG

The ImageJ project, and related projects in the SciJava component collection, are licensed as open source software (OSS) projects.

For an introduction to OSS licensing, see http://choosealicense.com/.

The table below summarizes the dominant license of each project’s components.

## Exceptions

Since each project consists of many components, some may be licensed differently. You can always find the license of each project in a LICENSE.txt or similar file of the relevant repository on GitHub. That said, in general, the table below is accurate with very few exceptions. When there is an exception, it is often licensed more permissively than the rest of the project—for example, the core of Bio-Formats is licensed under BSD-2 (1), and the ImageJ and SCIFIO tutorials are licensed under CC0 (1, 2), waiving all copyright interest as allowed by law.