LLK itself is released under GPL.

Generated files

Support files that are generated from llk-share templates, which are independent of the grammar, are under LGPL.
No rights are claimed over files generated from or depends on the grammar file, including the AST node files, visitors, lexer, parser, treeparser and their token type files. They should inherit license terms from the grammar file. If you own the grammar file, you are free use them under your own license terms.

Sample grammars and support projects

The sample grammars and other support projects are separate projects and not officially part of LLK. They are released under their own license terms. Please refer to each project for details. Here is a summary: