The Bond open source project will be ending development on March 31, 2025. After that date:

• There will be no further activity in this project: no new features, no bug fixes, and, importantly, no security fixes.
• The project's README will be updated to indicate that the project has been shut down.
• The Bond repositories on GitHub will remain, but they will be archived and read-only. You will still be able to access releases and source code, but you will no longer be able to open PRs or report issues.
• Bond's NuGet packages will remain on NuGet.org, but they will be unlisted and marked as unsupported.
• We will no longer monitor the StackOverflow tag “bond”.
• The bond package on Hackage will be deprecated.

If you are a Microsoft team that uses Bond, please see https://aka.ms/bond for Microsoft-internal guidance.

The most comprehensive documentation of the Bond binary formats can be found in the files compact_binary.h, fast_binary.h, and simple_binary.h.

On a personal note, I would like to thank everyone who contributed to Bond, whether you asked questions, reported bugs, or contributed to Bond itself. I learned something from every one of you, and I would not be the software developer I am today were it not for the time I worked on Bond. Special mentions go to @sapek, @ara-ayvazyan, @lalo, @tstein, @sigansky, @musiddi, and @bhardwajs.

Microsoft has no affiliation with other open-source implementations of Bond. We cannot endorse any of them, and Microsoft will not provide any support.

This announcement does not affect Microsoft products that themselves use Bond. You can receive support for those products under their individual support policies. However, these products will not provide general support for Bond.