ANTLR 2 License

We reserve no legal rights to the ANTLR--it is fully in the public domain. An individual or company may do whatever they wish with source code distributed with ANTLR or the code generated by ANTLR, including the incorporation of ANTLR, or its output, into commerical software.

We encourage users to develop software with ANTLR. However, we do ask that credit is given to us for developing ANTLR. By "credit", we mean that if you use ANTLR or incorporate any source code into one of your programs (commercial product, research project, or otherwise) that you acknowledge this fact somewhere in the documentation, research report, etc... If you like ANTLR and have developed a nice tool with the output, please mention that you developed it using ANTLR. In addition, we ask that the headers remain intact in our source code. As long as these guidelines are kept, we expect to continue enhancing this system and expect to make other tools available as they are completed.

In countries where the Public Domain status of the work may not be valid, the author grants a copyright licence to the general public to deal in the work without restriction and permission to sublicence derivates under the terms of any (OSI approved) Open Source licence.

The Python parser generator code under antlr/actions/python/ is covered by the 3-clause BSD licence (this part is included in the binary JAR files); the run-time part under lib/python/ is covered by the GNU GPL, version 3 or later (this part is not included in the binary JAR files). See here for the full details.

ANTLR Project -- Developer's Certificate of Origin

From ANTLR v3 and StringTemplate onwards, all substantial and/or active contributors must sign and fax or snailmail a copy of the ANTLR contributors certificate of origin formally agree to abide by it by signing on the bottom with the date. An email address and your full name must be included. Mail or fax to:
Terence Parr
University of San Francisco
2130 Fulton St, HR532
San Francisco, CA 94117
Fax: +1 415 422 5800

One-off contributions may be made through the feedback page.