Your binary serialization library
Bond is a cross-platform framework for working with schematized data. It supports cross-language de/serialization and powerful generic mechanisms for efficiently manipulating data. Bond is broadly used at Microsoft in high scale services.
Cap'n Proto serialization/RPC system - core tools and C++ library
Cista is a simple, high-performance, zero-copy C++ serialization & reflection library.
Simple C++ Config Loader Framework(Serialization & Reflection)
An implementation of cbor using C++ 17 variants
Header-only C++11 library to encode/decode base64, base64url, base32, base32hex and hex (a.k.a. base16) as specified in RFC 4648, plus Crockford's base32. MIT licensed with consistent, flexible API.
Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, Swift
FlatBuffers: Memory Efficient Serialization Library
Boost.org fusion module
Meta programming utilities for C++14. Merged in matt-42/lithium
The Leap Motion cross-format, cross-platform declarative serialization library
Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code
MessagePack implementation for C and C++ / msgpack.org[C/C++]
Nameof operator for modern C++, simply obtain the name of a variable, type, function, macro, and enum
Protocol Buffers with small code size
Protocol Buffers implementation in C
Minimalist protocol buffer decoder and encoder in C++
Boost.org serialization module
Simple Binary Encoding (SBE) - High Performance Message Codec
Fastest RPC in the west
a small protobuf implementation in C
Yet Another Serialization
A lightweight C++20 serialization and RPC library