Protocol Buffers - Google's data interchange format

FlatBuffers: Memory Efficient Serialization Library

A lightweight library for converting complex objects to and from simple Python datatypes.

A blazingly fast multi-language serialization framework powered by JIT and zero-copy.

🎷No ceremony, just code. Blazing fast, typesafe binary serialization.

macOS app to generate Swift 5 code for models from JSON (with Codeable)

Fast and well tested serialization library

Programming language agnostic type construction language based on polynomials.

Kim: A JSON Serialization and Marshaling framework

Conditional marshalling for Go

Efficient CBOR and JSON (de)serialization in Scala

Highly configurable, fast JSON encoder for Go

A curated list of awesome Python libraries, which implement models, schemas, serializers/deserializers, ODM's/ORM's, Active Records or similar patterns.

The bit level data interchange format for serializing data structures (long term maintenance).

Fast and simple JSON encoding toolkit

Android Bundle format support for Kotlinx Serialization.

Define your JSON schema as Python dataclasses

BeanIO 3, a Java library for marshalling and unmarshalling bean objects from XML, CSV, delimited and fixed length stream formats.

Flask-Arrested: A Framework For Rapidly Building REST APIs with Flask.

JSON serialization framework for Nim, works from a Stream directly to any type and back. Depends only on stdlib.