The Legato Application Framework is licensed under Mozilla Public License Version 2.0 (MPLv2). There are exceptions that are handled on a case-by-case basis and are documented in the source code.

Current list of exceptions:

Package License
CUnit LGPL v2+
Hashmap Implementation Apache-2.0
ifgen - ANTLR Tool BSD License
Jansson MIT License
md5 RSA License
String Hashing Algorithm Paul Hsieh exposition license
Open Sans typeface Apache-2.0