Open-source cross-platform data format used to serialize structured data

Protocol Buffers

Protocol Buffers 25.6

  -  3 MB  -  Freeware

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Protocol Buffers 25.6.


For those interested in downloading the most recent release of Protocol Buffers or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

What's new in this version:

Java:
- Add poison pill to makeExtensionsImmutable method

Kotlin:
- Populate Kotlin Manifest Files

PHP:
PHP C-Extension:
- Backport windows fixes with INFINITY/NAN
- See also UPB changes below, which may affect PHP C-Extension

Ruby:
Ruby C-Extension:
- Fixed compiler warnings in the Ruby C extension
- Backport windows fixes with INFINITY/NAN
- See also UPB changes below, which may affect Ruby C-Extension

UPB (Python/PHP/Ruby C-Extension):
- Backport windows fixes with INFINITY/NAN

Other:
- Update artifact actions
- Remove CMake downgrade workaround from Windows CI tests
- Upgrade setup-ruby to get around 'Unsupported platform macos-13'
- Remove continous-only tag which didn't exist in 25.x
- Update remaining Python 3.8 upb macos tests to macos-13
- Update GitHub Actions to use macOS-13 ahead of macOS-12 deprecation
- Upgrade PHP mac runner to avoid slow PHP installs
- Restore macOS CMake configuration
- Update staleness tests to only run over release branch