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Download Protocol Buffers

Release Packages

Latest Version

The latest release of Protocol Buffers can be found on the release page.

Old Versions

We recommend users to use the latest version. If you still need an old version for some reason, you can find our historical releases here.

Source Code

GitHub Repository

Protocol Buffers source code is hosted on GitHub: https://github.com/protocolbuffers/protobuf.

Google Code Repository

Our old Google Code repository is: https://code.google.com/p/protobuf/. We moved to GitHub on Aug 26, 2014 and no future changes will be made on the Google Code site. For latest code updates/issues, please visit our GitHub site.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.